//-------------------------------------------------------- MainWindow
#include "mainwindow.h"
#include <cinttypes>
#include <limits>
#include <functional>
#include <fstream>
#include <iterator>
#include <fftw3.h>
#include <QLineEdit>
#include <QRegExpValidator>
#include <QRegExp>
#include <QRegularExpression>
#include <QDesktopServices>
#include <QUrl>
#include <QStandardPaths>
#include <QDir>
#include <QDebug>
#include <QtConcurrent/QtConcurrentRun>
#include <QProgressDialog>
#include <QHostInfo>
#include <QVector>
#include <QCursor>
#include <QToolTip>
#include <QAction>
#include <QActionGroup>
#include <QSplashScreen>

#include "revision_utils.hpp"
#include "qt_helpers.hpp"
#include "NetworkAccessManager.hpp"
#include "soundout.h"
#include "soundin.h"
#include "Modulator.hpp"
#include "Detector.hpp"
#include "plotter.h"
#include "echoplot.h"
#include "echograph.h"
#include "fastplot.h"
#include "fastgraph.h"
#include "about.h"
#include "messageaveraging.h"
#include "widegraph.h"
#include "sleep.h"
#include "logqso.h"
#include "Radio.hpp"
#include "Bands.hpp"
#include "TransceiverFactory.hpp"
#include "StationList.hpp"
#include "LiveFrequencyValidator.hpp"
#include "MessageClient.hpp"
#include "wsprnet.h"
#include "signalmeter.h"
#include "HelpTextWindow.hpp"
#include "SampleDownloader.hpp"
#include "Audio/BWFFile.hpp"
#include "MultiSettings.hpp"
#include "MaidenheadLocatorValidator.hpp"
#include "CallsignValidator.hpp"
#include "PhaseEqualizationDialog.hpp"

#include "ui_mainwindow.h"
#include "moc_mainwindow.cpp"


extern "C" {
  //----------------------------------------------------- C and Fortran routines
  void symspec_(struct dec_data *, int* k, int* ntrperiod, int* nsps, int* ingain,
                int* minw, float* px, float s[], float* df3, int* nhsym, int* npts8,
                float *m_pxmax);

  void hspec_(short int d2[], int* k, int* nutc0, int* ntrperiod, int* nrxfreq, int* ntol,
              bool* bmsk144, bool* bcontest, bool* btrain, double const pcoeffs[], int* ingain,
              char mycall[], char hiscall[], bool* bshmsg, bool* bswl, char ddir[], float green[],
              float s[], int* jh, float *pxmax, float *rmsNoGain, char line[], char mygrid[],
              int len1, int len2, int len3, int len4, int len5);
//  float s[], int* jh, char line[], char mygrid[],

  void genft8_(char* msg, char* msgsent, int itone[], int len1, int len2);

  void gen4_(char* msg, int* ichk, char* msgsent, int itone[],
               int* itext, int len1, int len2);

  void gen9_(char* msg, int* ichk, char* msgsent, int itone[],
               int* itext, int len1, int len2);

  void genmsk144_(char* msg, char* MyGrid, int* ichk, bool* bcontest,
                  char* msgsent, int itone[], int* itext, int len1,
                  int len2, int len3);

  void gen65_(char* msg, int* ichk, char* msgsent, int itone[],
              int* itext, int len1, int len2);

  void genqra64_(char* msg, int* ichk, char* msgsent, int itone[],
              int* itext, int len1, int len2);

  void genwspr_(char* msg, char* msgsent, int itone[], int len1, int len2);

  void genwspr_fsk8_(char* msg, char* msgsent, int itone[], int len1, int len2);

  void geniscat_(char* msg, char* msgsent, int itone[], int len1, int len2);

  bool stdmsg_(const char* msg, int len);

  void azdist_(char* MyGrid, char* HisGrid, double* utch, int* nAz, int* nEl,
               int* nDmiles, int* nDkm, int* nHotAz, int* nHotABetter,
               int len1, int len2);

  void morse_(char* msg, int* icw, int* ncw, int len);

  int ptt_(int nport, int ntx, int* iptt, int* nopen);

  void wspr_downsample_(short int d2[], int* k);

  int savec2_(char* fname, int* TR_seconds, double* dial_freq, int len1);

  void avecho_( short id2[], int* dop, int* nfrit, int* nqual, float* f1,
                float* level, float* sigdb, float* snr, float* dfreq,
                float* width);

  void fast_decode_(short id2[], int narg[], int* ntrperiod,
                    char msg[], char mycall[], char hiscall[],
                    int len1, int len2, int len3);
  void degrade_snr_(short d2[], int* n, float* db, float* bandwidth);

  void wav12_(short d2[], short d1[], int* nbytes, short* nbitsam2);

  void refspectrum_(short int d2[], bool* bclearrefspec, bool* brefspec,
                    bool* buseref, const char* c_fname, int len);

  void freqcal_(short d2[], int* k, int* nkhz,int* noffset, int* ntol,
                char line[], int len);
}

int volatile itone[NUM_ISCAT_SYMBOLS];	//Audio tones for all Tx symbols
int volatile icw[NUM_CW_SYMBOLS];	      //Dits for CW ID
struct dec_data dec_data;               // for sharing with Fortran

int outBufSize;
int rc;
qint32  g_iptt {0};
wchar_t buffer[256];
float fast_green[703];
float fast_green2[703];
float fast_s[44992];                                    //44992=64*703
float fast_s2[44992];
int   fast_jh {0};
int   fast_jhpeak {0};
int   fast_jh2 {0};
int narg[15];
QVector<QColor> g_ColorTbl;

namespace
{
  Radio::Frequency constexpr default_frequency {14076000};
  QRegExp message_alphabet {"[- @A-Za-z0-9+./?#<>]*"};
  QRegExp grid_regexp {QRegExp {"[A-Ra-r]{2}[0-9]{2}([A-Xa-x]{2}){0,1}"}};

  bool message_is_73 (int type, QStringList const& msg_parts)
  {
    bool b;
    b = type >= 0
        && (((type < 6 || 7 == type)
        && (msg_parts.contains ("73") or msg_parts.contains ("RR73")))
            || (type == 6 && !msg_parts.filter ("73").isEmpty ()));
    return b;
  }

  int ms_minute_error ()
  {
    auto const& now = QDateTime::currentDateTime ();
    auto const& time = now.time ();
    auto second = time.second ();
    return now.msecsTo (now.addSecs (second > 30 ? 60 - second : -second)) - time.msec ();
  }
}

//--------------------------------------------------- MainWindow constructor
MainWindow::MainWindow(QDir const& temp_directory, bool multiple,
                       MultiSettings * multi_settings, QSharedMemory *shdmem,
                       unsigned downSampleFactor,
                       QSplashScreen * splash, QWidget *parent) :
  QMainWindow(parent),
  m_network_manager {this},
  m_valid {true},
  m_splash {splash},
  m_dataDir {QStandardPaths::writableLocation (QStandardPaths::DataLocation)},
  m_revision {revision ()},
  m_multiple {multiple},
  m_multi_settings {multi_settings},
  m_configurations_button {0},
  m_settings {multi_settings->settings ()},
  ui(new Ui::MainWindow),
  m_config {temp_directory, m_settings, this},
  m_WSPR_band_hopping {m_settings, &m_config, this},
  m_WSPR_tx_next {false},
  m_rigErrorMessageBox {MessageBox::Critical, tr ("Rig Control Error")
      , MessageBox::Cancel | MessageBox::Ok | MessageBox::Retry},
  m_wideGraph (new WideGraph(m_settings)),
  m_echoGraph (new EchoGraph(m_settings)),
  m_fastGraph (new FastGraph(m_settings)),
  m_logDlg (new LogQSO (program_title (), m_settings, this)),
  m_lastDialFreq {0},
  m_dialFreqRxWSPR {0},
  m_detector {new Detector {RX_SAMPLE_RATE, NTMAX, downSampleFactor}},
  m_FFTSize {6192 / 2},         // conservative value to avoid buffer overruns
  m_soundInput {new SoundInput},
  m_modulator {new Modulator {TX_SAMPLE_RATE, NTMAX}},
  m_soundOutput {new SoundOutput},
  m_msErase {0},
  m_secBandChanged {0},
  m_freqNominal {0},
  m_freqTxNominal {0},
  m_s6 {0.},
  m_tRemaining {0.},
  m_DTtol {3.0},
  m_waterfallAvg {1},
  m_ntx {1},
  m_gen_message_is_cq {false},
  m_XIT {0},
  m_sec0 {-1},
  m_RxLog {1},			//Write Date and Time to RxLog
  m_nutc0 {999999},
  m_ntr {0},
  m_tx {0},
  m_TRperiod {60},
  m_inGain {0},
  m_secID {0},
  m_idleMinutes {0},
  m_nSubMode {0},
  m_nclearave {1},
  m_pctx {0},
  m_nseq {0},
  m_nWSPRdecodes {0},
  m_k0 {9999999},
  m_nPick {0},
  m_frequency_list_fcal_iter {m_config.frequencies ()->begin ()},
  m_nTx73 {0},
  m_btxok {false},
  m_diskData {false},
  m_loopall {false},
  m_txFirst {false},
  m_auto {false},
  m_restart {false},
  m_startAnother {false},
  m_saveDecoded {false},
  m_saveAll {false},
  m_widebandDecode {false},
  m_dataAvailable {false},
  m_blankLine {false},
  m_decodedText2 {false},
  m_freeText {false},
  m_sentFirst73 {false},
  m_currentMessageType {-1},
  m_lastMessageType {-1},
  m_lockTxFreq {false},
  m_bShMsgs {false},
  m_bSWL {false},
  m_uploading {false},
  m_txNext {false},
  m_grid6 {false},
  m_tuneup {false},
  m_bTxTime {false},
  m_rxDone {false},
  m_bSimplex {false},
  m_bEchoTxOK {false},
  m_bTransmittedEcho {false},
  m_bEchoTxed {false},
  m_bFastDecodeCalled {false},
  m_bDoubleClickAfterCQnnn {false},
  m_bRefSpec {false},
  m_bClearRefSpec {false},
  m_bTrain {false},
  m_ihsym {0},
  m_nzap {0},
  m_px {0.0},
  m_iptt0 {0},
  m_btxok0 {false},
  m_nsendingsh {0},
  m_onAirFreq0 {0.0},
  m_first_error {true},
  tx_status_label {"Receiving"},
  wsprNet {new WSPRNet {&m_network_manager, this}},
  m_appDir {QApplication::applicationDirPath ()},
  m_palette {"Linrad"},
  m_mode {"JT9"},
  m_rpt {"-15"},
  m_pfx {
    "1A", "1S",
      "3A", "3B6", "3B8", "3B9", "3C", "3C0", "3D2", "3D2C",
      "3D2R", "3DA", "3V", "3W", "3X", "3Y", "3YB", "3YP",
      "4J", "4L", "4S", "4U1I", "4U1U", "4W", "4X",
      "5A", "5B", "5H", "5N", "5R", "5T", "5U", "5V", "5W", "5X", "5Z",
      "6W", "6Y",
      "7O", "7P", "7Q", "7X",
      "8P", "8Q", "8R",
      "9A", "9G", "9H", "9J", "9K", "9L", "9M2", "9M6", "9N",
      "9Q", "9U", "9V", "9X", "9Y",
      "A2", "A3", "A4", "A5", "A6", "A7", "A9", "AP",
      "BS7", "BV", "BV9", "BY",
      "C2", "C3", "C5", "C6", "C9", "CE", "CE0X", "CE0Y",
      "CE0Z", "CE9", "CM", "CN", "CP", "CT", "CT3", "CU",
      "CX", "CY0", "CY9",
      "D2", "D4", "D6", "DL", "DU",
      "E3", "E4", "E5", "EA", "EA6", "EA8", "EA9", "EI", "EK",
      "EL", "EP", "ER", "ES", "ET", "EU", "EX", "EY", "EZ",
      "F", "FG", "FH", "FJ", "FK", "FKC", "FM", "FO", "FOA",
      "FOC", "FOM", "FP", "FR", "FRG", "FRJ", "FRT", "FT5W",
      "FT5X", "FT5Z", "FW", "FY",
      "M", "MD", "MI", "MJ", "MM", "MU", "MW",
      "H4", "H40", "HA", "HB", "HB0", "HC", "HC8", "HH",
      "HI", "HK", "HK0", "HK0M", "HL", "HM", "HP", "HR",
      "HS", "HV", "HZ",
      "I", "IS", "IS0",
      "J2", "J3", "J5", "J6", "J7", "J8", "JA", "JDM",
      "JDO", "JT", "JW", "JX", "JY",
      "K", "KC4", "KG4", "KH0", "KH1", "KH2", "KH3", "KH4", "KH5",
      "KH5K", "KH6", "KH7", "KH8", "KH9", "KL", "KP1", "KP2",
      "KP4", "KP5",
      "LA", "LU", "LX", "LY", "LZ",
      "OA", "OD", "OE", "OH", "OH0", "OJ0", "OK", "OM", "ON",
      "OX", "OY", "OZ",
      "P2", "P4", "PA", "PJ2", "PJ7", "PY", "PY0F", "PT0S", "PY0T", "PZ",
      "R1F", "R1M",
      "S0", "S2", "S5", "S7", "S9", "SM", "SP", "ST", "SU",
      "SV", "SVA", "SV5", "SV9",
      "T2", "T30", "T31", "T32", "T33", "T5", "T7", "T8", "T9", "TA",
      "TF", "TG", "TI", "TI9", "TJ", "TK", "TL", "TN", "TR", "TT",
      "TU", "TY", "TZ",
      "UA", "UA2", "UA9", "UK", "UN", "UR",
      "V2", "V3", "V4", "V5", "V6", "V7", "V8", "VE", "VK", "VK0H",
      "VK0M", "VK9C", "VK9L", "VK9M", "VK9N", "VK9W", "VK9X", "VP2E",
      "VP2M", "VP2V", "VP5", "VP6", "VP6D", "VP8", "VP8G", "VP8H",
      "VP8O", "VP8S", "VP9", "VQ9", "VR", "VU", "VU4", "VU7",
      "XE", "XF4", "XT", "XU", "XW", "XX9", "XZ",
      "YA", "YB", "YI", "YJ", "YK", "YL", "YN", "YO", "YS", "YU", "YV", "YV0",
      "Z2", "Z3", "ZA", "ZB", "ZC4", "ZD7", "ZD8", "ZD9", "ZF", "ZK1N",
      "ZK1S", "ZK2", "ZK3", "ZL", "ZL7", "ZL8", "ZL9", "ZP", "ZS", "ZS8"
      },
  m_sfx {"P",  "0",  "1",  "2",  "3",  "4",  "5",  "6",  "7",  "8",  "9",  "A"},
  mem_jt9 {shdmem},
  m_msAudioOutputBuffered (0u),
  m_framesAudioInputBuffered (RX_SAMPLE_RATE / 10),
  m_downSampleFactor (downSampleFactor),
  m_audioThreadPriority (QThread::HighPriority),
  m_bandEdited {false},
  m_splitMode {false},
  m_monitoring {false},
  m_transmitting {false},
  m_tune {false},
  m_tx_watchdog {false},
  m_block_pwr_tooltip {false},
  m_PwrBandSetOK {true},
  m_lastMonitoredFrequency {default_frequency},
  m_toneSpacing {0.},
  m_firstDecode {0},
  m_optimizingProgress {"Optimizing decoder FFTs for your CPU.\n"
      "Please be patient,\n"
      "this may take a few minutes", QString {}, 0, 1, this},
  m_messageClient {new MessageClient {QApplication::applicationName (),
        version (), revision (),
        m_config.udp_server_name (), m_config.udp_server_port (),
        this}},
  psk_Reporter {new PSK_Reporter {m_messageClient, this}},
  m_manual {&m_network_manager}
{
  ui->setupUi(this);
  createStatusBar();
  add_child_to_event_filter (this);
  ui->dxGridEntry->setValidator (new MaidenheadLocatorValidator {this});
  ui->dxCallEntry->setValidator (new CallsignValidator {this});
  ui->sbTR->values ({5, 10, 15, 30});

  m_baseCall = Radio::base_callsign (m_config.my_callsign ());

  m_optimizingProgress.setWindowModality (Qt::WindowModal);
  m_optimizingProgress.setAutoReset (false);
  m_optimizingProgress.setMinimumDuration (15000); // only show after 15s delay

  // Closedown.
  connect (ui->actionExit, &QAction::triggered, this, &QMainWindow::close);

  // parts of the rig error message box that are fixed
  m_rigErrorMessageBox.setInformativeText (tr ("Do you want to reconfigure the radio interface?"));
  m_rigErrorMessageBox.setDefaultButton (MessageBox::Ok);

  // start audio thread and hook up slots & signals for shutdown management
  // these objects need to be in the audio thread so that invoking
  // their slots is done in a thread safe way
  m_soundOutput->moveToThread (&m_audioThread);
  m_modulator->moveToThread (&m_audioThread);
  m_soundInput->moveToThread (&m_audioThread);
  m_detector->moveToThread (&m_audioThread);

  // hook up sound output stream slots & signals and disposal
  connect (this, &MainWindow::initializeAudioOutputStream, m_soundOutput, &SoundOutput::setFormat);
  connect (m_soundOutput, &SoundOutput::error, this, &MainWindow::showSoundOutError);
  // connect (m_soundOutput, &SoundOutput::status, this, &MainWindow::showStatusMessage);
  connect (this, &MainWindow::outAttenuationChanged, m_soundOutput, &SoundOutput::setAttenuation);
  connect (&m_audioThread, &QThread::finished, m_soundOutput, &QObject::deleteLater);

  // hook up Modulator slots and disposal
  connect (this, &MainWindow::transmitFrequency, m_modulator, &Modulator::setFrequency);
  connect (this, &MainWindow::endTransmitMessage, m_modulator, &Modulator::stop);
  connect (this, &MainWindow::tune, m_modulator, &Modulator::tune);
  connect (this, &MainWindow::sendMessage, m_modulator, &Modulator::start);
  connect (&m_audioThread, &QThread::finished, m_modulator, &QObject::deleteLater);

  // hook up the audio input stream signals, slots and disposal
  connect (this, &MainWindow::startAudioInputStream, m_soundInput, &SoundInput::start);
  connect (this, &MainWindow::suspendAudioInputStream, m_soundInput, &SoundInput::suspend);
  connect (this, &MainWindow::resumeAudioInputStream, m_soundInput, &SoundInput::resume);
  connect (this, &MainWindow::finished, m_soundInput, &SoundInput::stop);
  connect(m_soundInput, &SoundInput::error, this, &MainWindow::showSoundInError);
  // connect(m_soundInput, &SoundInput::status, this, &MainWindow::showStatusMessage);
  connect (&m_audioThread, &QThread::finished, m_soundInput, &QObject::deleteLater);

  connect (this, &MainWindow::finished, this, &MainWindow::close);

  // hook up the detector signals, slots and disposal
  connect (this, &MainWindow::FFTSize, m_detector, &Detector::setBlockSize);
  connect(m_detector, &Detector::framesWritten, this, &MainWindow::dataSink);
  connect (&m_audioThread, &QThread::finished, m_detector, &QObject::deleteLater);

  // setup the waterfall
  connect(m_wideGraph.data (), SIGNAL(freezeDecode2(int)),this,SLOT(freezeDecode(int)));
  connect(m_wideGraph.data (), SIGNAL(f11f12(int)),this,SLOT(bumpFqso(int)));
  connect(m_wideGraph.data (), SIGNAL(setXIT2(int)),this,SLOT(setXIT(int)));

  connect (m_fastGraph.data (), &FastGraph::fastPick, this, &MainWindow::fastPick);

  connect (this, &MainWindow::finished, m_wideGraph.data (), &WideGraph::close);
  connect (this, &MainWindow::finished, m_echoGraph.data (), &EchoGraph::close);
  connect (this, &MainWindow::finished, m_fastGraph.data (), &FastGraph::close);

  // setup the log QSO dialog
  connect (m_logDlg.data (), &LogQSO::acceptQSO, this, &MainWindow::acceptQSO2);
  connect (this, &MainWindow::finished, m_logDlg.data (), &LogQSO::close);

  // Network message handlers
  connect (m_messageClient, &MessageClient::reply, this, &MainWindow::replyToCQ);
  connect (m_messageClient, &MessageClient::replay, this, &MainWindow::replayDecodes);
  connect (m_messageClient, &MessageClient::halt_tx, [this] (bool auto_only) {
      if (m_config.accept_udp_requests ()) {
        if (auto_only) {
          if (ui->autoButton->isChecked ()) {
            ui->autoButton->click();
          }
        } else {
          ui->stopTxButton->click();
        }
      }
    });
  connect (m_messageClient, &MessageClient::error, this, &MainWindow::networkError);
  connect (m_messageClient, &MessageClient::free_text, [this] (QString const& text, bool send) {
      if (m_config.accept_udp_requests ()) {
        tx_watchdog (false);
        // send + non-empty text means set and send the free text
        // message, !send + non-empty text means set the current free
        // text message, send + empty text means send the current free
        // text message without change, !send + empty text means clear
        // the current free text message
        if (0 == ui->tabWidget->currentIndex ()) {
          if (!text.isEmpty ()) {
            ui->tx5->setCurrentText (text);
          }
          if (send) {
            ui->txb5->click ();
          } else if (text.isEmpty ()) {
            ui->tx5->setCurrentText (text);
          }
        } else if (1 == ui->tabWidget->currentIndex ()) {
          if (!text.isEmpty ()) {
            ui->freeTextMsg->setCurrentText (text);
          }
          if (send) {
            ui->rbFreeText->click ();
          } else if (text.isEmpty ()) {
            ui->freeTextMsg->setCurrentText (text);
          }
        }
        QApplication::alert (this);
      }
    });

  // Hook up WSPR band hopping
  connect (ui->band_hopping_schedule_push_button, &QPushButton::clicked
           , &m_WSPR_band_hopping, &WSPRBandHopping::show_dialog);
  connect (ui->sbTxPercent, static_cast<void (QSpinBox::*) (int)> (&QSpinBox::valueChanged)
           , &m_WSPR_band_hopping, &WSPRBandHopping::set_tx_percent);

  on_EraseButton_clicked ();

  QActionGroup* modeGroup = new QActionGroup(this);
  ui->actionFT8->setActionGroup(modeGroup);
  ui->actionJT9->setActionGroup(modeGroup);
  ui->actionJT65->setActionGroup(modeGroup);
  ui->actionJT9_JT65->setActionGroup(modeGroup);
  ui->actionJT4->setActionGroup(modeGroup);
  ui->actionWSPR->setActionGroup(modeGroup);
  ui->actionWSPR_LF->setActionGroup(modeGroup);
  ui->actionEcho->setActionGroup(modeGroup);
  ui->actionISCAT->setActionGroup(modeGroup);
  ui->actionMSK144->setActionGroup(modeGroup);
  ui->actionQRA64->setActionGroup(modeGroup);
  ui->actionFreqCal->setActionGroup(modeGroup);

  QActionGroup* saveGroup = new QActionGroup(this);
  ui->actionNone->setActionGroup(saveGroup);
  ui->actionSave_decoded->setActionGroup(saveGroup);
  ui->actionSave_all->setActionGroup(saveGroup);

  QActionGroup* DepthGroup = new QActionGroup(this);
  ui->actionQuickDecode->setActionGroup(DepthGroup);
  ui->actionMediumDecode->setActionGroup(DepthGroup);
  ui->actionDeepestDecode->setActionGroup(DepthGroup);

  connect (ui->download_samples_action, &QAction::triggered, [this] () {
      if (!m_sampleDownloader)
        {
          m_sampleDownloader.reset (new SampleDownloader {m_settings, &m_config, &m_network_manager, this});
        }
      m_sampleDownloader->show ();
    });

  connect (ui->view_phase_response_action, &QAction::triggered, [this] () {
      if (!m_phaseEqualizationDialog)
        {
          m_phaseEqualizationDialog.reset (new PhaseEqualizationDialog {m_settings, m_dataDir, m_phaseEqCoefficients, this});
          connect (m_phaseEqualizationDialog.data (), &PhaseEqualizationDialog::phase_equalization_changed,
                   [this] (QVector<double> const& coeffs) {
                     m_phaseEqCoefficients = coeffs;
                   });
        }
      m_phaseEqualizationDialog->show ();
    });

  QButtonGroup* txMsgButtonGroup = new QButtonGroup {this};
  txMsgButtonGroup->addButton(ui->txrb1,1);
  txMsgButtonGroup->addButton(ui->txrb2,2);
  txMsgButtonGroup->addButton(ui->txrb3,3);
  txMsgButtonGroup->addButton(ui->txrb4,4);
  txMsgButtonGroup->addButton(ui->txrb5,5);
  txMsgButtonGroup->addButton(ui->txrb6,6);
  set_dateTimeQSO(-1);
  connect(txMsgButtonGroup,SIGNAL(buttonClicked(int)),SLOT(set_ntx(int)));
  connect(ui->decodedTextBrowser2,SIGNAL(selectCallsign(bool,bool)),this,
          SLOT(doubleClickOnCall(bool,bool)));
  connect(ui->decodedTextBrowser,SIGNAL(selectCallsign(bool,bool)),this,
          SLOT(doubleClickOnCall2(bool,bool)));

  // initialise decoded text font and hook up change signal
  setDecodedTextFont (m_config.decoded_text_font ());
  connect (&m_config, &Configuration::decoded_text_font_changed, [this] (QFont const& font) {
      setDecodedTextFont (font);
    });

  setWindowTitle (program_title ());

  connect(&proc_jt9, &QProcess::readyReadStandardOutput, this, &MainWindow::readFromStdout);
  connect(&proc_jt9, static_cast<void (QProcess::*) (QProcess::ProcessError)> (&QProcess::error),
          [this] (QProcess::ProcessError error) {
            subProcessError (&proc_jt9, error);
          });
  connect(&proc_jt9, static_cast<void (QProcess::*) (int, QProcess::ExitStatus)> (&QProcess::finished),
          [this] (int exitCode, QProcess::ExitStatus status) {
            subProcessFailed (&proc_jt9, exitCode, status);
          });

  connect(&p1, &QProcess::readyReadStandardOutput, this, &MainWindow::p1ReadFromStdout);
  connect(&proc_jt9, static_cast<void (QProcess::*) (QProcess::ProcessError)> (&QProcess::error),
          [this] (QProcess::ProcessError error) {
            subProcessError (&p1, error);
          });
  connect(&p1, static_cast<void (QProcess::*) (int, QProcess::ExitStatus)> (&QProcess::finished),
          [this] (int exitCode, QProcess::ExitStatus status) {
            subProcessFailed (&p1, exitCode, status);
          });

  connect(&p3, static_cast<void (QProcess::*) (QProcess::ProcessError)> (&QProcess::error),
          [this] (QProcess::ProcessError error) {
            subProcessError (&p3, error);
          });
  connect(&p3, static_cast<void (QProcess::*) (int, QProcess::ExitStatus)> (&QProcess::finished),
          [this] (int exitCode, QProcess::ExitStatus status) {
            subProcessFailed (&p3, exitCode, status);
          });

  // hook up save WAV file exit handling
  connect (&m_saveWAVWatcher, &QFutureWatcher<QString>::finished, [this] {
      // extract the promise from the future
      auto const& result = m_saveWAVWatcher.future ().result ();
      if (!result.isEmpty ())   // error
        {
          MessageBox::critical_message (this, tr("Error Writing WAV File"), result);
        }
    });

  // Hook up working frequencies.
  ui->bandComboBox->setModel (m_config.frequencies ());
  ui->bandComboBox->setModelColumn (FrequencyList::frequency_mhz_column);

  // combo box drop down width defaults to the line edit + decorator width,
  // here we change that to the column width size hint of the model column
  ui->bandComboBox->view ()->setMinimumWidth (ui->bandComboBox->view ()->sizeHintForColumn (FrequencyList::frequency_mhz_column));

  // Enable live band combo box entry validation and action.
  auto band_validator = new LiveFrequencyValidator {ui->bandComboBox
                                                    , m_config.bands ()
                                                    , m_config.frequencies ()
                                                    , &m_freqNominal
                                                    , this};
  ui->bandComboBox->setValidator (band_validator);

  // Hook up signals.
  connect (band_validator, &LiveFrequencyValidator::valid, this, &MainWindow::band_changed);
  connect (ui->bandComboBox->lineEdit (), &QLineEdit::textEdited, [this] (QString const&) {m_bandEdited = true;});

  // hook up configuration signals
  connect (&m_config, &Configuration::transceiver_update, this, &MainWindow::handle_transceiver_update);
  connect (&m_config, &Configuration::transceiver_failure, this, &MainWindow::handle_transceiver_failure);
  connect (&m_config, &Configuration::udp_server_changed, m_messageClient, &MessageClient::set_server);
  connect (&m_config, &Configuration::udp_server_port_changed, m_messageClient, &MessageClient::set_server_port);

  // set up configurations menu
  connect (m_multi_settings, &MultiSettings::configurationNameChanged, [this] (QString const& name) {
      if ("Default" != name) {
        config_label.setText (name);
        config_label.show ();
      }
      else {
        config_label.hide ();
      }
    });
  m_multi_settings->create_menu_actions (this, ui->menuConfig);
  m_configurations_button = m_rigErrorMessageBox.addButton (tr ("Configurations...")
                                                            , QMessageBox::ActionRole);

  // set up message text validators
  ui->tx1->setValidator (new QRegExpValidator {message_alphabet, this});
  ui->tx2->setValidator (new QRegExpValidator {message_alphabet, this});
  ui->tx3->setValidator (new QRegExpValidator {message_alphabet, this});
  ui->tx4->setValidator (new QRegExpValidator {message_alphabet, this});
  ui->tx5->setValidator (new QRegExpValidator {message_alphabet, this});
  ui->tx6->setValidator (new QRegExpValidator {message_alphabet, this});
  ui->freeTextMsg->setValidator (new QRegExpValidator {message_alphabet, this});

  // Free text macros model to widget hook up.
  ui->tx5->setModel (m_config.macros ());
  connect (ui->tx5->lineEdit(), &QLineEdit::editingFinished,
           [this] () {on_tx5_currentTextChanged (ui->tx5->lineEdit()->text());});
  ui->freeTextMsg->setModel (m_config.macros ());
  connect (ui->freeTextMsg->lineEdit ()
           , &QLineEdit::editingFinished
           , [this] () {on_freeTextMsg_currentTextChanged (ui->freeTextMsg->lineEdit ()->text ());});

  connect(&m_guiTimer, &QTimer::timeout, this, &MainWindow::guiUpdate);
  m_guiTimer.start(100);   //### Don't change the 100 ms! ###

  ptt0Timer.setSingleShot(true);
  connect(&ptt0Timer, &QTimer::timeout, this, &MainWindow::stopTx2);

  ptt1Timer.setSingleShot(true);
  connect(&ptt1Timer, &QTimer::timeout, this, &MainWindow::startTx2);

  p1Timer.setSingleShot(true);
  connect(&p1Timer, &QTimer::timeout, this, &MainWindow::startP1);

  logQSOTimer.setSingleShot(true);
  connect(&logQSOTimer, &QTimer::timeout, this, &MainWindow::on_logQSOButton_clicked);

  tuneButtonTimer.setSingleShot(true);
  connect(&tuneButtonTimer, &QTimer::timeout, this, &MainWindow::on_stopTxButton_clicked);

  tuneATU_Timer.setSingleShot(true);
  connect(&tuneATU_Timer, &QTimer::timeout, this, &MainWindow::stopTuneATU);

  killFileTimer.setSingleShot(true);
  connect(&killFileTimer, &QTimer::timeout, this, &MainWindow::killFile);

  uploadTimer.setSingleShot(true);
  connect(&uploadTimer, SIGNAL(timeout()), this, SLOT(uploadSpots()));

  TxAgainTimer.setSingleShot(true);
  connect(&TxAgainTimer, SIGNAL(timeout()), this, SLOT(TxAgain()));

  connect(m_wideGraph.data (), SIGNAL(setFreq3(int,int)),this,
          SLOT(setFreq4(int,int)));

  m_QSOText.clear();
  decodeBusy(false);
  QString t1[28]={"1 uW","2 uW","5 uW","10 uW","20 uW","50 uW","100 uW","200 uW","500 uW",
                  "1 mW","2 mW","5 mW","10 mW","20 mW","50 mW","100 mW","200 mW","500 mW",
                  "1 W","2 W","5 W","10 W","20 W","50 W","100 W","200 W","500 W","1 kW"};

  m_msg[0][0]=0;
  m_bQRAsyncWarned=false;

  for(int i=0; i<28; i++)  {                      //Initialize dBm values
    float dbm=(10.0*i)/3.0 - 30.0;
    int ndbm=0;
    if(dbm<0) ndbm=int(dbm-0.5);
    if(dbm>=0) ndbm=int(dbm+0.5);
    QString t;
    t.sprintf("%d dBm  ",ndbm);
    t+=t1[i];
    ui->TxPowerComboBox->addItem(t);
  }

  ui->labAz->setStyleSheet("border: 0px;");
//  ui->labDist->setStyleSheet("border: 0px;");

  auto t = "UTC   dB   DT Freq    Message";
  ui->decodedTextLabel->setText(t);
  ui->decodedTextLabel2->setText(t);
  readSettings();		         //Restore user's setup params
  m_audioThread.start (m_audioThreadPriority);
  m_dateTimeDefault=QDateTime(QDate(1900,1,1),QTime(0,0));
  m_dateTimeQSOOn=m_dateTimeDefault;

#ifdef WIN32
  if (!m_multiple)
    {
      while(true)
        {
          int iret=killbyname("jt9.exe");
          if(iret == 603) break;
          if(iret != 0)
            MessageBox::warning_message (this, tr ("Error Killing jt9.exe Process")
                                         , tr ("KillByName return code: %1")
                                         .arg (iret));
        }
    }
#endif

  {
    //delete any .quit file that might have been left lying around
    //since its presence will cause jt9 to exit a soon as we start it
    //and decodes will hang
    QFile quitFile {m_config.temp_dir ().absoluteFilePath (".quit")};
    while (quitFile.exists ())
      {
        if (!quitFile.remove ())
          {
            MessageBox::query_message (this, tr ("Error removing \"%1\"").arg (quitFile.fileName ())
                                       , tr ("Click OK to retry"));
          }
      }
  }

  //Create .lock so jt9 will wait
  QFile {m_config.temp_dir ().absoluteFilePath (".lock")}.open(QIODevice::ReadWrite);

  QStringList jt9_args {
    "-s", QApplication::applicationName () // shared memory key,
                                           // includes rig
#ifdef NDEBUG
      , "-w", "1"               //FFTW patience - release
#else
      , "-w", "1"               //FFTW patience - debug builds for speed
#endif
      // The number  of threads for  FFTW specified here is  chosen as
      // three because  that gives  the best  throughput of  the large
      // FFTs used  in jt9.  The count  is the minimum of  (the number
      // available CPU threads less one) and three.  This ensures that
      // there is always at least one free CPU thread to run the other
      // mode decoder in parallel.
      , "-m", QString::number (qMin (qMax (QThread::idealThreadCount () - 1, 1), 3)) //FFTW threads

      , "-e", QDir::toNativeSeparators (m_appDir)
      , "-a", QDir::toNativeSeparators (m_dataDir.absolutePath ())
      , "-t", QDir::toNativeSeparators (m_config.temp_dir ().absolutePath ())
      };
  QProcessEnvironment env {QProcessEnvironment::systemEnvironment ()};
  env.insert ("OMP_STACKSIZE", "4M");
  proc_jt9.setProcessEnvironment (env);
  proc_jt9.start(QDir::toNativeSeparators (m_appDir) + QDir::separator () +
          "jt9", jt9_args, QIODevice::ReadWrite | QIODevice::Unbuffered);

  QString fname {QDir::toNativeSeparators(m_dataDir.absoluteFilePath ("wsjtx_wisdom.dat"))};
  QByteArray cfname=fname.toLocal8Bit();
  fftwf_import_wisdom_from_filename(cfname);

  genStdMsgs(m_rpt);
  m_ntx = 6;
  ui->txrb6->setChecked(true);

  connect (&m_wav_future_watcher, &QFutureWatcher<void>::finished, this, &MainWindow::diskDat);

  connect(&watcher3, SIGNAL(finished()),this,SLOT(fast_decode_done()));
//  Q_EMIT startAudioInputStream (m_config.audio_input_device (), m_framesAudioInputBuffered, &m_detector, m_downSampleFactor, m_config.audio_input_channel ());
  Q_EMIT startAudioInputStream (m_config.audio_input_device (), m_framesAudioInputBuffered, m_detector, m_downSampleFactor, m_config.audio_input_channel ());
  Q_EMIT initializeAudioOutputStream (m_config.audio_output_device (), AudioDevice::Mono == m_config.audio_output_channel () ? 1 : 2, m_msAudioOutputBuffered);
  Q_EMIT transmitFrequency (ui->TxFreqSpinBox->value () - m_XIT);

  enable_DXCC_entity (m_config.DXCC ());  // sets text window proportions and (re)inits the logbook

  ui->label_9->setStyleSheet("QLabel{background-color: #aabec8}");
  ui->label_10->setStyleSheet("QLabel{background-color: #aabec8}");

  // this must be done before initializing the mode as some modes need
  // to turn off split on the rig e.g. WSPR
  m_config.transceiver_online ();
  bool vhf {m_config.enable_VHF_features ()};

  ui->txFirstCheckBox->setChecked(m_txFirst);
  morse_(const_cast<char *> (m_config.my_callsign ().toLatin1().constData()),
         const_cast<int *> (icw), &m_ncw, m_config.my_callsign ().length());
  on_actionWide_Waterfall_triggered();
  m_wideGraph->setTol(500);
  m_wideGraph->setLockTxFreq(m_lockTxFreq);
  ui->cbShMsgs->setChecked(m_bShMsgs);
  ui->cbSWL->setChecked(m_bSWL);
  if(m_bFast9) m_bFastMode=true;
  ui->cbFast9->setChecked(m_bFast9 or m_bFastMode);

  if(m_mode=="FT8") on_actionFT8_triggered();
  if(m_mode=="JT4") on_actionJT4_triggered();
  if(m_mode=="JT9") on_actionJT9_triggered();
  if(m_mode=="JT65") on_actionJT65_triggered();
  if(m_mode=="JT9+JT65") on_actionJT9_JT65_triggered();
  if(m_mode=="WSPR") on_actionWSPR_triggered();
  if(m_mode=="WSPR-LF") on_actionWSPR_LF_triggered();
  if(m_mode=="ISCAT") on_actionISCAT_triggered();
  if(m_mode=="MSK144") on_actionMSK144_triggered();
  if(m_mode=="QRA64") on_actionQRA64_triggered();
  if(m_mode=="Echo") on_actionEcho_triggered();
  if(m_mode=="Echo") monitor(false);   //Don't auto-start Monitor in Echo mode.
  if(m_mode=="FreqCal") on_actionFreqCal_triggered();

  ui->sbSubmode->setValue (vhf ? m_nSubMode : 0);
  if(m_mode=="MSK144") {
    Q_EMIT transmitFrequency (1000.0);
  } else {
    Q_EMIT transmitFrequency (ui->TxFreqSpinBox->value() - m_XIT);
  }
  m_saveDecoded=ui->actionSave_decoded->isChecked();
  m_saveAll=ui->actionSave_all->isChecked();
  ui->inGain->setValue(m_inGain);
  ui->sbTxPercent->setValue(m_pctx);
  ui->TxPowerComboBox->setCurrentIndex(int(0.3*(m_dBm + 30.0)+0.2));
  ui->cbUploadWSPR_Spots->setChecked(m_uploadSpots);
  ui->cbTxLock->setChecked(m_lockTxFreq);
  if((m_ndepth&7)==1) ui->actionQuickDecode->setChecked(true);
  if((m_ndepth&7)==2) ui->actionMediumDecode->setChecked(true);
  if((m_ndepth&7)==3) ui->actionDeepestDecode->setChecked(true);
  ui->actionInclude_averaging->setChecked(m_ndepth&16);
  ui->actionInclude_correlation->setChecked(m_ndepth&32);
  ui->actionEnable_AP_DXcall->setChecked(m_ndepth&64);

  m_UTCdisk=-1;
  m_fCPUmskrtd=0.0;
  m_bFastDone=false;
  m_bAltV=false;
  m_bNoMoreFiles=false;
  m_bVHFwarned=false;
  m_bDoubleClicked=false;
  m_wait=0;

  if(m_mode.startsWith ("WSPR") and m_pctx>0)  {
    QPalette palette {ui->sbTxPercent->palette ()};
    palette.setColor(QPalette::Base,Qt::yellow);
    ui->sbTxPercent->setPalette(palette);
  }
  fixStop();
  VHF_features_enabled(m_config.enable_VHF_features());
  m_wideGraph->setVHF(m_config.enable_VHF_features());

  connect( wsprNet, SIGNAL(uploadStatus(QString)), this, SLOT(uploadResponse(QString)));

  statusChanged();

  m_fastGraph->setMode(m_mode);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);

  connect (&minuteTimer, &QTimer::timeout, this, &MainWindow::on_the_minute);
  minuteTimer.setSingleShot (true);
  minuteTimer.start (ms_minute_error () + 60 * 1000);

  connect (&splashTimer, &QTimer::timeout, this, &MainWindow::splash_done);
  splashTimer.setSingleShot (true);
  splashTimer.start (20 * 1000);

  if(m_config.my_callsign()=="K1JT" or m_config.my_callsign()=="K9AN" or
     m_config.my_callsign()=="G4WJS" || m_config.my_callsign () == "G3PQA") {
      ui->actionFT8->setEnabled(true);
      ui->actionWSPR_LF->setEnabled(true);
  }

  // this must be the last statement of constructor
  if (!m_valid) throw std::runtime_error {"Fatal initialization exception"};
}

void MainWindow::splash_done ()
{
  m_splash && m_splash->close ();
}

void MainWindow::on_the_minute ()
{
  if (minuteTimer.isSingleShot ())
    {
      minuteTimer.setSingleShot (false);
      minuteTimer.start (60 * 1000); // run free
    }
  else
    {
        auto const& ms_error = ms_minute_error ();
        if (qAbs (ms_error) > 1000) // keep drift within +-1s
        {
          minuteTimer.setSingleShot (true);
          minuteTimer.start (ms_error + 60 * 1000);
        }
    }

  if (m_config.watchdog () && !m_mode.startsWith ("WSPR"))
    {
      if (m_idleMinutes < m_config.watchdog ()) ++m_idleMinutes;
      update_watchdog_label ();
    }
  else
    {
      tx_watchdog (false);
    }
}

//--------------------------------------------------- MainWindow destructor
MainWindow::~MainWindow()
{
  m_astroWidget.reset ();
  QString fname {QDir::toNativeSeparators(m_dataDir.absoluteFilePath ("wsjtx_wisdom.dat"))};
  QByteArray cfname=fname.toLocal8Bit();
  fftwf_export_wisdom_to_filename(cfname);
  m_audioThread.quit ();
  m_audioThread.wait ();
  remove_child_from_event_filter (this);
}

//-------------------------------------------------------- writeSettings()
void MainWindow::writeSettings()
{
  m_settings->beginGroup("MainWindow");
  m_settings->setValue ("geometry", saveGeometry ());
  m_settings->setValue ("geometryNoControls", m_geometryNoControls);
  m_settings->setValue ("state", saveState ());
  m_settings->setValue("MRUdir", m_path);
  m_settings->setValue("TxFirst",m_txFirst);
  m_settings->setValue("DXcall",ui->dxCallEntry->text());
  m_settings->setValue("DXgrid",ui->dxGridEntry->text());
  m_settings->setValue ("AstroDisplayed", m_astroWidget && m_astroWidget->isVisible());
  m_settings->setValue ("MsgAvgDisplayed", m_msgAvgWidget && m_msgAvgWidget->isVisible());
  m_settings->setValue ("FreeText", ui->freeTextMsg->currentText ());
  m_settings->setValue ("HideControls", ui->actionHide_Controls->isChecked ());
  m_settings->endGroup();

  m_settings->beginGroup("Common");
  m_settings->setValue("Mode",m_mode);
  m_settings->setValue("ModeTx",m_modeTx);
  m_settings->setValue("SaveNone",ui->actionNone->isChecked());
  m_settings->setValue("SaveDecoded",ui->actionSave_decoded->isChecked());
  m_settings->setValue("SaveAll",ui->actionSave_all->isChecked());
  m_settings->setValue("NDepth",m_ndepth);
  m_settings->setValue("RxFreq",ui->RxFreqSpinBox->value());
  m_settings->setValue("TxFreq",ui->TxFreqSpinBox->value());
  m_settings->setValue("WSPRfreq",ui->WSPRfreqSpinBox->value());
  m_settings->setValue("SubMode",ui->sbSubmode->value());
  m_settings->setValue("DTtol",m_DTtol);
  m_settings->setValue("Ftol", ui->sbFtol->value ());
  m_settings->setValue("MinSync",m_minSync);
  m_settings->setValue ("AutoSeq", ui->cbAutoSeq->isChecked ());
  m_settings->setValue("ShMsgs",m_bShMsgs);
  m_settings->setValue("SWL",ui->cbSWL->isChecked());
  m_settings->setValue ("DialFreq", QVariant::fromValue(m_lastMonitoredFrequency));
  m_settings->setValue("InGain",m_inGain);
  m_settings->setValue("OutAttenuation", ui->outAttenuation->value ());
  m_settings->setValue("NoSuffix",m_noSuffix);
  m_settings->setValue("GUItab",ui->tabWidget->currentIndex());
  m_settings->setValue("OutBufSize",outBufSize);
  m_settings->setValue("LockTxFreq",m_lockTxFreq);
  m_settings->setValue("PctTx",m_pctx);
  m_settings->setValue("dBm",m_dBm);
  m_settings->setValue ("WSPRPreferType1", ui->WSPR_prefer_type_1_check_box->isChecked ());
  m_settings->setValue("UploadSpots",m_uploadSpots);
  m_settings->setValue ("BandHopping", ui->band_hopping_group_box->isChecked ());
  m_settings->setValue ("TRPeriod", ui->sbTR->value ());
  m_settings->setValue("FastMode",m_bFastMode);
  m_settings->setValue("Fast9",m_bFast9);
  m_settings->setValue ("CQTxfreq", ui->sbCQTxFreq->value ());
  m_settings->setValue("pwrBandTxMemory",m_pwrBandTxMemory);
  m_settings->setValue("pwrBandTuneMemory",m_pwrBandTuneMemory);
  {
    QList<QVariant> coeffs;     // suitable for QSettings
    for (auto const& coeff : m_phaseEqCoefficients)
      {
        coeffs << coeff;
      }
    m_settings->setValue ("PhaseEqualizationCoefficients", QVariant {coeffs});
  }
  m_settings->endGroup();
}

//---------------------------------------------------------- readSettings()
void MainWindow::readSettings()
{
  m_settings->beginGroup("MainWindow");
  ui->actionHide_Controls->setChecked (m_settings->value("HideControls", false).toBool ());
  restoreGeometry (m_settings->value ("geometry", saveGeometry ()).toByteArray ());
  m_geometryNoControls = m_settings->value ("geometryNoControls",saveGeometry()).toByteArray();
  restoreState (m_settings->value ("state", saveState ()).toByteArray ());
  ui->dxCallEntry->setText (m_settings->value ("DXcall", QString {}).toString ());
  ui->dxGridEntry->setText (m_settings->value ("DXgrid", QString {}).toString ());
  m_path = m_settings->value("MRUdir", m_config.save_directory ().absolutePath ()).toString ();
  m_txFirst = m_settings->value("TxFirst",false).toBool();
  auto displayAstro = m_settings->value ("AstroDisplayed", false).toBool ();
  auto displayMsgAvg = m_settings->value ("MsgAvgDisplayed", false).toBool ();
  if (m_settings->contains ("FreeText")) ui->freeTextMsg->setCurrentText (
        m_settings->value ("FreeText").toString ());
  m_settings->endGroup();

  // do this outside of settings group because it uses groups internally
  ui->actionAstronomical_data->setChecked (displayAstro);

  m_settings->beginGroup("Common");
  m_mode=m_settings->value("Mode","JT9").toString();
  m_modeTx=m_settings->value("ModeTx","JT9").toString();
  if(m_modeTx.mid(0,3)=="JT9") ui->pbTxMode->setText("Tx JT9  @");
  if(m_modeTx=="JT65") ui->pbTxMode->setText("Tx JT65  #");
  ui->actionNone->setChecked(m_settings->value("SaveNone",true).toBool());
  ui->actionSave_decoded->setChecked(m_settings->value("SaveDecoded",false).toBool());
  ui->actionSave_all->setChecked(m_settings->value("SaveAll",false).toBool());
  ui->RxFreqSpinBox->setValue(0); // ensure a change is signaled
  ui->RxFreqSpinBox->setValue(m_settings->value("RxFreq",1500).toInt());
  m_nSubMode=m_settings->value("SubMode",0).toInt();
  ui->sbFtol->setValue (m_settings->value("Ftol", 20).toInt());
  m_minSync=m_settings->value("MinSync",0).toInt();
  ui->syncSpinBox->setValue(m_minSync);
  ui->cbAutoSeq->setChecked (m_settings->value ("AutoSeq", false).toBool());
  m_bShMsgs=m_settings->value("ShMsgs",false).toBool();
  m_bSWL=m_settings->value("SWL",false).toBool();
  m_bFast9=m_settings->value("Fast9",false).toBool();
  m_bFastMode=m_settings->value("FastMode",false).toBool();
  ui->sbTR->setValue (m_settings->value ("TRPeriod", 30).toInt());
  m_lastMonitoredFrequency = m_settings->value ("DialFreq",
    QVariant::fromValue<Frequency> (default_frequency)).value<Frequency> ();
  ui->WSPRfreqSpinBox->setValue(0); // ensure a change is signaled
  ui->WSPRfreqSpinBox->setValue(m_settings->value("WSPRfreq",1500).toInt());
  ui->TxFreqSpinBox->setValue(0); // ensure a change is signaled
  ui->TxFreqSpinBox->setValue(m_settings->value("TxFreq",1500).toInt());
  m_ndepth=m_settings->value("NDepth",3).toInt();
  m_inGain=m_settings->value("InGain",0).toInt();
  m_pctx=m_settings->value("PctTx",20).toInt();
  m_dBm=m_settings->value("dBm",37).toInt();
  ui->WSPR_prefer_type_1_check_box->setChecked (m_settings->value ("WSPRPreferType1", true).toBool ());
  m_uploadSpots=m_settings->value("UploadSpots",false).toBool();
  if(!m_uploadSpots) ui->cbUploadWSPR_Spots->setStyleSheet("QCheckBox{background-color: yellow}");
  ui->band_hopping_group_box->setChecked (m_settings->value ("BandHopping", false).toBool());
  // setup initial value of tx attenuator
  m_block_pwr_tooltip = true;
  ui->outAttenuation->setValue (m_settings->value ("OutAttenuation", 0).toInt ());
  m_block_pwr_tooltip = false;
  ui->sbCQTxFreq->setValue (m_settings->value ("CQTxFreq", 280).toInt());
  m_noSuffix=m_settings->value("NoSuffix",false).toBool();
  int n=m_settings->value("GUItab",0).toInt();
  ui->tabWidget->setCurrentIndex(n);
  outBufSize=m_settings->value("OutBufSize",4096).toInt();
  m_lockTxFreq=m_settings->value("LockTxFreq",false).toBool();
  m_pwrBandTxMemory=m_settings->value("pwrBandTxMemory").toHash();
  m_pwrBandTuneMemory=m_settings->value("pwrBandTuneMemory").toHash();
  {
    auto const& coeffs = m_settings->value ("PhaseEqualizationCoefficients"
                                            , QList<QVariant> {0., 0., 0., 0., 0.}).toList ();
    m_phaseEqCoefficients.clear ();
    for (auto const& coeff : coeffs)
      {
        m_phaseEqCoefficients.append (coeff.value<double> ());
      }
  }
  m_settings->endGroup();

  // use these initialisation settings to tune the audio o/p buffer
  // size and audio thread priority
  m_settings->beginGroup ("Tune");
  m_msAudioOutputBuffered = m_settings->value ("Audio/OutputBufferMs").toInt ();
  m_framesAudioInputBuffered = m_settings->value ("Audio/InputBufferFrames", RX_SAMPLE_RATE / 10).toInt ();
  m_audioThreadPriority = static_cast<QThread::Priority> (m_settings->value ("Audio/ThreadPriority", QThread::HighPriority).toInt () % 8);
  m_settings->endGroup ();

  if (displayMsgAvg) on_actionMessage_averaging_triggered();
}

void MainWindow::setDecodedTextFont (QFont const& font)
{
  ui->decodedTextBrowser->setContentFont (font);
  ui->decodedTextBrowser2->setContentFont (font);
  auto style_sheet = "QLabel {" + font_as_stylesheet (font) + '}';
  ui->decodedTextLabel->setStyleSheet (ui->decodedTextLabel->styleSheet () + style_sheet);
  ui->decodedTextLabel2->setStyleSheet (ui->decodedTextLabel2->styleSheet () + style_sheet);
  if (m_msgAvgWidget) {
    m_msgAvgWidget->changeFont (font);
  }
  updateGeometry ();
}

void MainWindow::fixStop()
{
  m_hsymStop=179;
  if(m_mode=="WSPR") {
    m_hsymStop=396;
  } else if(m_mode=="WSPR-LF") {
    m_hsymStop=813;
  } else if(m_mode=="Echo") {
    m_hsymStop=10;
  } else if (m_mode=="JT4"){
    m_hsymStop=176;
    if(m_config.decode_at_52s()) m_hsymStop=179;
  } else if (m_mode=="JT9"){
    m_hsymStop=173;
    if(m_config.decode_at_52s()) m_hsymStop=179;
  } else if (m_mode=="JT65" or m_mode=="JT9+JT65"){
    m_hsymStop=174;
    if(m_config.decode_at_52s()) m_hsymStop=179;
  } else if (m_mode=="QRA64"){
    m_hsymStop=179;
    if(m_config.decode_at_52s()) m_hsymStop=186;
  } else if (m_mode=="FreqCal"){
    m_hsymStop=((int(m_TRperiod/0.288))/8)*8;
  } else if (m_mode=="FT8") {
    m_hsymStop=48;
  }
}

//-------------------------------------------------------------- dataSink()
void MainWindow::dataSink(qint64 frames)
{
  static float s[NSMAX];
  char line[80];

  int k (frames);
  QString fname {QDir::toNativeSeparators(m_dataDir.absoluteFilePath ("refspec.dat"))};
  QByteArray bafname = fname.toLatin1();
  const char *c_fname = bafname.data();
  int len=fname.length();

  if(m_diskData) {
    dec_data.params.ndiskdat=1;
  } else {
    dec_data.params.ndiskdat=0;
  }

  m_bUseRef=m_wideGraph->useRef();
  refspectrum_(&dec_data.d2[k-m_nsps/2],&m_bClearRefSpec,&m_bRefSpec,
      &m_bUseRef,c_fname,len);
  m_bClearRefSpec=false;

  if(m_mode=="ISCAT" or m_mode=="MSK144" or m_bFast9) {
    fastSink(frames);
    if(m_bFastMode) return;
  }

// Get power, spectrum, and ihsym
  int trmin=m_TRperiod/60;
//  int k (frames - 1);
  dec_data.params.nfa=m_wideGraph->nStartFreq();
  dec_data.params.nfb=m_wideGraph->Fmax();
  int nsps=m_nsps;
  if(m_bFastMode) nsps=6912;
  int nsmo=m_wideGraph->smoothYellow()-1;
  symspec_(&dec_data,&k,&trmin,&nsps,&m_inGain,&nsmo,&m_px,s,&m_df3,&m_ihsym,&m_npts8,&m_pxmax);
  if(m_mode=="WSPR") wspr_downsample_(dec_data.d2,&k);
  if(m_ihsym <=0) return;
  if(ui) ui->signal_meter_widget->setValue(m_px,m_pxmax); // Update thermometer
  if(m_monitoring || m_diskData) {
    m_wideGraph->dataSink2(s,m_df3,m_ihsym,m_diskData);
  }
  if(m_mode=="MSK144") return;

  fixStop();
  if (m_mode == "FreqCal"
      // only calculate after 1st chunk, also skip chunk where rig
      // changed frequency
      && !(m_ihsym % 8) && m_ihsym > 8 && m_ihsym <= m_hsymStop) {
    int RxFreq=ui->RxFreqSpinBox->value ();
    int nkhz=(m_freqNominal+RxFreq)/1000;
    int ftol = ui->sbFtol->value ();
    freqcal_(&dec_data.d2[0],&k,&nkhz,&RxFreq,&ftol,&line[0],80);
    QString t=QString::fromLatin1(line);
    DecodedText decodedtext;
    decodedtext=t;
    ui->decodedTextBrowser->displayDecodedText (decodedtext,m_baseCall,m_config.DXCC(),
         m_logBook,m_config.color_CQ(),m_config.color_MyCall(),m_config.color_DXCC(),
         m_config.color_NewCall());
// Append results text to file "fmt.all".
    QFile f {m_dataDir.absoluteFilePath ("fmt.all")};
    if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
      QTextStream out(&f);
      out << t << endl;
      f.close();
    } else {
      MessageBox::warning_message (this, tr ("File Open Error")
                                   , tr ("Cannot open \"%1\" for append: %2")
                                   .arg (f.fileName ()).arg (f.errorString ()));
    }
    if(m_ihsym==m_hsymStop && ui->actionFrequency_calibration->isChecked()) {
      freqCalStep();
    }
  }

  if(m_ihsym==3*m_hsymStop/4) {
    m_dialFreqRxWSPR=m_freqNominal;
  }

  if(m_ihsym == m_hsymStop) {
    if(m_mode=="Echo") {
      float snr=0;
      int nfrit=0;
      int nqual=0;
      float f1=1500.0;
      float xlevel=0.0;
      float sigdb=0.0;
      float dfreq=0.0;
      float width=0.0;
      echocom_.nclearave=m_nclearave;
      int nDop=0;
      avecho_(dec_data.d2,&nDop,&nfrit,&nqual,&f1,&xlevel,&sigdb,
          &snr,&dfreq,&width);
      QString t;
      t.sprintf("%3d %7.1f %7.1f %7.1f %7.1f %3d",echocom_.nsum,xlevel,sigdb,
                dfreq,width,nqual);
      t=QDateTime::currentDateTimeUtc().toString("hh:mm:ss  ") + t;
      if (ui) ui->decodedTextBrowser->appendText(t);
      if(m_echoGraph->isVisible()) m_echoGraph->plotSpec();
      m_nclearave=0;
//Don't restart Monitor after an Echo transmission
      if(m_bEchoTxed and !m_auto) {
        monitor(false);
        m_bEchoTxed=false;
      }
      return;
    }
    if(m_mode=="FreqCal") {
      return;
    }
    if( m_dialFreqRxWSPR==0) m_dialFreqRxWSPR=m_freqNominal;
    m_dataAvailable=true;
    dec_data.params.npts8=(m_ihsym*m_nsps)/16;
    dec_data.params.newdat=1;
    dec_data.params.nagain=0;
    dec_data.params.nzhsym=m_hsymStop;
    QDateTime now {QDateTime::currentDateTimeUtc ()};
    m_dateTime = now.toString ("yyyy-MMM-dd hh:mm");
    if(!m_mode.startsWith ("WSPR")) decode(); //Start decoder

    if(!m_diskData) {                        //Always save; may delete later

      if(m_mode=="FT8") {
        int n=now.time().second() % m_TRperiod;
        if(n<(m_TRperiod/2)) n=n+m_TRperiod;
        auto const& period_start=now.addSecs(-n);
        m_fnameWE=m_config.save_directory().absoluteFilePath (period_start.toString("yyMMdd_hhmmss"));
      } else {
        auto const& period_start = now.addSecs (-(now.time ().minute () % (m_TRperiod / 60)) * 60);
        m_fnameWE=m_config.save_directory ().absoluteFilePath (period_start.toString ("yyMMdd_hhmm"));
      }
      m_fileToSave.clear ();

      // the following is potential a threading hazard - not a good
      // idea to pass pointer to be processed in another thread
      m_saveWAVWatcher.setFuture (QtConcurrent::run (std::bind (&MainWindow::save_wave_file,
            this, m_fnameWE, &dec_data.d2[0], m_TRperiod, m_config.my_callsign(),
            m_config.my_grid(), m_mode, m_nSubMode, m_freqNominal, m_hisCall, m_hisGrid)));
      if (m_mode=="WSPR") {
        QString c2name_string {m_fnameWE + ".c2"};
        int len1=c2name_string.length();
        char c2name[80];
        strcpy(c2name,c2name_string.toLatin1 ().constData ());
        int nsec=120;
        int nbfo=1500;
        double f0m1500=m_freqNominal/1000000.0 + nbfo - 1500;
        int err = savec2_(c2name,&nsec,&f0m1500,len1);
        if (err!=0) MessageBox::warning_message (this, tr ("Error saving c2 file"), c2name);
      }
    }

    if(m_mode.startsWith ("WSPR")) {
      QString t2,cmnd;
      double f0m1500=m_dialFreqRxWSPR/1000000.0;   // + 0.000001*(m_BFO - 1500);
      t2.sprintf(" -f %.6f ",f0m1500);
      QString degrade;
      degrade.sprintf("-d %4.1f ",m_config.degrade());

      if(m_diskData) {
        cmnd='"' + m_appDir + '"' + "/wsprd -a \"" +
            QDir::toNativeSeparators(m_dataDir.absolutePath()) + "\" \"" + m_path + "\"";
      } else {
        if(m_mode=="WSPR-LF") {
          cmnd='"' + m_appDir + '"' + "/wspr_fsk8d " + degrade + t2 +" -a \"" +
              QDir::toNativeSeparators(m_dataDir.absolutePath()) + "\" " +
              '"' + m_fnameWE + ".wav\"";
        } else {
          cmnd='"' + m_appDir + '"' + "/wsprd -a \"" +
              QDir::toNativeSeparators(m_dataDir.absolutePath()) + "\" " +
              t2 + '"' + m_fnameWE + ".wav\"";
        }
      }
      QString t3=cmnd;
      int i1=cmnd.indexOf("/wsprd ");
      cmnd=t3.mid(0,i1+7) + t3.mid(i1+7);

      if(m_mode=="WSPR-LF") cmnd=cmnd.replace("/wsprd ","/wspr_fsk8d "+degrade+t2);
      if (ui) ui->DecodeButton->setChecked (true);
      m_cmndP1=QDir::toNativeSeparators(cmnd);
      p1Timer.start(1000);
      m_decoderBusy = true;
      statusUpdate ();
    }
    m_rxDone=true;
  }
}

void MainWindow::startP1()
{
  p1.start(m_cmndP1);
}

QString MainWindow::save_wave_file (QString const& name, short const * data, int seconds,
        QString const& my_callsign, QString const& my_grid, QString const& mode, qint32 sub_mode,
        Frequency frequency, QString const& his_call, QString const& his_grid) const
{
  //
  // This member function runs in a thread and should not access
  // members that may be changed in the GUI thread or any other thread
  // without suitable synchronization.
  //
  QAudioFormat format;
  format.setCodec ("audio/pcm");
  format.setSampleRate (12000);
  format.setChannelCount (1);
  format.setSampleSize (16);
  format.setSampleType (QAudioFormat::SignedInt);
  auto source = QString {"%1, %2"}.arg (my_callsign).arg (my_grid);
  auto comment = QString {"Mode=%1%2, Freq=%3%4"}
     .arg (mode)
     .arg (QString {mode.contains ('J') && !mode.contains ('+')
           ? QString {", Sub Mode="} + QChar {'A' + sub_mode}
         : QString {}})
        .arg (Radio::frequency_MHz_string (frequency))
     .arg (QString {!mode.startsWith ("WSPR") ? QString {", DXCall=%1, DXGrid=%2"}
         .arg (his_call)
         .arg (his_grid).toLocal8Bit () : ""});
  BWFFile::InfoDictionary list_info {
      {{{'I','S','R','C'}}, source.toLocal8Bit ()},
      {{{'I','S','F','T'}}, program_title (revision ()).simplified ().toLocal8Bit ()},
      {{{'I','C','R','D'}}, QDateTime::currentDateTime ()
                          .toString ("yyyy-MM-ddTHH:mm:ss.zzzZ").toLocal8Bit ()},
      {{{'I','C','M','T'}}, comment.toLocal8Bit ()},
  };
  BWFFile wav {format, name + ".wav", list_info};
  if (!wav.open (BWFFile::WriteOnly)
      || 0 > wav.write (reinterpret_cast<char const *> (data)
                        , sizeof (short) * seconds * format.sampleRate ()))
    {
      return wav.errorString ();
    }
  return QString {};
}

//-------------------------------------------------------------- fastSink()
void MainWindow::fastSink(qint64 frames)
{
  int k (frames);
  bool decodeNow=false;

  if(k < m_k0) {                                 //New sequence ?
    memcpy(fast_green2,fast_green,4*703);        //Copy fast_green[] to fast_green2[]
    memcpy(fast_s2,fast_s,4*703*64);             //Copy fast_s[] into fast_s2[]
    fast_jh2=fast_jh;
    if(!m_diskData) memset(dec_data.d2,0,2*30*12000);   //Zero the d2[] array
    m_bFastDecodeCalled=false;
    m_bDecoded=false;
  }

  QDateTime tnow=QDateTime::currentDateTimeUtc();
  int ihr=tnow.toString("hh").toInt();
  int imin=tnow.toString("mm").toInt();
  int isec=tnow.toString("ss").toInt();
  isec=isec - isec%m_TRperiod;
  int nutc0=10000*ihr + 100*imin + isec;
  if(m_diskData) nutc0=m_UTCdisk;
  char line[80];
  bool bmsk144=((m_mode=="MSK144") and (m_monitoring or m_diskData));
  line[0]=0;

  int RxFreq=ui->RxFreqSpinBox->value ();
  int nTRpDepth=m_TRperiod + 1000*(m_ndepth & 3);
  qint64 ms0 = QDateTime::currentMSecsSinceEpoch();
  strncpy(dec_data.params.mycall, (m_config.my_callsign()+"            ").toLatin1(),12);
  QString hisCall {ui->dxCallEntry->text ()};
  bool bshmsg=ui->cbShMsgs->isChecked();
  bool bcontest=m_config.contestMode();
  bool bswl=ui->cbSWL->isChecked();
  strncpy(dec_data.params.hiscall,(hisCall + "            ").toLatin1 ().constData (), 12);
  strncpy(dec_data.params.mygrid, (m_config.my_grid()+"      ").toLatin1(),6);
  QString dataDir;
  dataDir = m_dataDir.absolutePath ();
  char ddir[512];
  strncpy(ddir,dataDir.toLatin1(), sizeof (ddir) - 1);
  float pxmax = 0;
  float rmsNoGain = 0;
  int ftol = ui->sbFtol->value ();
  hspec_(dec_data.d2,&k,&nutc0,&nTRpDepth,&RxFreq,&ftol,&bmsk144,&bcontest,
         &m_bTrain,m_phaseEqCoefficients.constData(),&m_inGain,&dec_data.params.mycall[0],
         &dec_data.params.hiscall[0],&bshmsg,&bswl,
         &ddir[0],fast_green,fast_s,&fast_jh,&pxmax,&rmsNoGain,&line[0],&dec_data.params.mygrid[0],
         12,12,512,80,6);
  float px = fast_green[fast_jh];
  QString t;
  t.sprintf(" Rx noise: %5.1f ",px);
  ui->signal_meter_widget->setValue(rmsNoGain,pxmax); // Update thermometer
  m_fastGraph->plotSpec(m_diskData,m_UTCdisk);

  if(bmsk144 and (line[0]!=0)) {
    DecodedText decodedtext;
    QString message;
    message=QString::fromLatin1(line);
    decodedtext=message.replace(QChar::LineFeed,"");
    ui->decodedTextBrowser->displayDecodedText (decodedtext,m_baseCall,m_config.DXCC(),
         m_logBook,m_config.color_CQ(),m_config.color_MyCall(),m_config.color_DXCC(),
         m_config.color_NewCall());
    m_bDecoded=true;
    int i1=message.indexOf(m_baseCall);
    int i2=message.indexOf(m_hisCall);
    if(i1>10 and i2>i1+3) {
      if (ui->cbAutoSeq->isVisible () && ui->cbAutoSeq->isChecked ()
         && (message.indexOf (" 73") < 0 || m_ntx != 6)) {
        processMessage (message,43,false);
      }
    }
    if (m_mode != "ISCAT") postDecode (true, decodedtext.string ());
    writeAllTxt(message);
    bool stdMsg = decodedtext.report(m_baseCall,
                  Radio::base_callsign(ui->dxCallEntry->text()),m_rptRcvd);
    decodedtext=message.mid(0,4) + message.mid(6,-1);
    if(m_config.spot_to_psk_reporter() and stdMsg and !m_diskData) pskPost(decodedtext);
  }

  float fracTR=float(k)/(12000.0*m_TRperiod);
  decodeNow=false;
  if(fracTR>0.92) {
    m_dataAvailable=true;
    fast_decode_done();
    m_bFastDone=true;
  }

  m_k0=k;
  if(m_diskData and m_k0 >= dec_data.params.kin - 7 * 512) decodeNow=true;
  if(!m_diskData and m_tRemaining<0.35 and !m_bFastDecodeCalled) decodeNow=true;
//  if(m_mode=="MSK144" and m_config.realTimeDecode()) decodeNow=false;
  if(m_mode=="MSK144") decodeNow=false;

  if(decodeNow) {
    m_dataAvailable=true;
    m_t0=0.0;
    m_t1=k/12000.0;
    m_kdone=k;
    dec_data.params.newdat=1;
    if(!m_decoderBusy) {
      m_bFastDecodeCalled=true;
      decode();
    }
  }

  if(decodeNow or m_bFastDone) {
    if(!m_diskData) {
      QDateTime now {QDateTime::currentDateTimeUtc()};
      int n=now.time().second() % m_TRperiod;
      if(n<(m_TRperiod/2)) n=n+m_TRperiod;
      auto const& period_start = now.addSecs (-n);
      m_fnameWE = m_config.save_directory ().absoluteFilePath (period_start.toString ("yyMMdd_hhmmss"));
      m_fileToSave.clear ();
      if(m_saveAll or m_bAltV or (m_bDecoded and m_saveDecoded) or (m_mode!="MSK144")) {
        m_bAltV=false;
        // the following is potential a threading hazard - not a good
        // idea to pass pointer to be processed in another thread
        m_saveWAVWatcher.setFuture (QtConcurrent::run (std::bind (&MainWindow::save_wave_file,
           this, m_fnameWE, &dec_data.d2[0], m_TRperiod, m_config.my_callsign(),
           m_config.my_grid(), m_mode, m_nSubMode, m_freqNominal, m_hisCall, m_hisGrid)));
      }
      if(m_mode!="MSK144") {
        killFileTimer.start (3*1000*m_TRperiod/4); //Kill 3/4 period from now
      }
    }
    m_bFastDone=false;
  }
  float tsec=0.001*(QDateTime::currentMSecsSinceEpoch() - ms0);
  m_fCPUmskrtd=0.9*m_fCPUmskrtd + 0.1*tsec;
}

void MainWindow::showSoundInError(const QString& errorMsg)
{
  if (m_splash && m_splash->isVisible ()) m_splash->hide ();
  MessageBox::critical_message (this, tr ("Error in Sound Input"), errorMsg);
}

void MainWindow::showSoundOutError(const QString& errorMsg)
{
  if (m_splash && m_splash->isVisible ()) m_splash->hide ();
  MessageBox::critical_message (this, tr ("Error in Sound Output"), errorMsg);
}

void MainWindow::showStatusMessage(const QString& statusMsg)
{statusBar()->showMessage(statusMsg);}

void MainWindow::on_actionSettings_triggered()               //Setup Dialog
{
  // things that might change that we need know about
  auto callsign = m_config.my_callsign ();
  bool bvhf0=m_config.enable_VHF_features();
  bool bcontest0=m_config.contestMode();
  if (QDialog::Accepted == m_config.exec ()) {
    if (m_config.my_callsign () != callsign) {
      m_baseCall = Radio::base_callsign (m_config.my_callsign ());
      morse_(const_cast<char *> (m_config.my_callsign ().toLatin1().constData()),
             const_cast<int *> (icw), &m_ncw, m_config.my_callsign ().length());
    }

    on_dxGridEntry_textChanged (m_hisGrid); // recalculate distances in case of units change
    enable_DXCC_entity (m_config.DXCC ());  // sets text window proportions and (re)inits the logbook

    if(m_config.spot_to_psk_reporter ()) pskSetLocal ();

    if(m_config.restart_audio_input ()) {
      Q_EMIT startAudioInputStream (m_config.audio_input_device (),
                 m_framesAudioInputBuffered, m_detector, m_downSampleFactor,
                                      m_config.audio_input_channel ());
    }

    if(m_config.restart_audio_output ()) {
      Q_EMIT initializeAudioOutputStream (m_config.audio_output_device (),
           AudioDevice::Mono == m_config.audio_output_channel () ? 1 : 2,
                                          m_msAudioOutputBuffered);
    }

    displayDialFrequency ();
    bool vhf {m_config.enable_VHF_features()};
    m_wideGraph->setVHF(vhf);
    if (!vhf) ui->sbSubmode->setValue (0);

    setup_status_bar (vhf);
    bool b = vhf && (m_mode=="JT4" or m_mode=="JT65" or m_mode=="ISCAT" or
                     m_mode=="JT9" or m_mode=="MSK144");
    if(b) VHF_features_enabled(b);
    if(m_mode=="FT8") on_actionFT8_triggered();
    if(m_mode=="JT4") on_actionJT4_triggered();
    if(m_mode=="JT9") on_actionJT9_triggered();
    if(m_mode=="JT9+JT65") on_actionJT9_JT65_triggered();
    if(m_mode=="JT65") {
      on_actionJT65_triggered();
      if(m_config.enable_VHF_features() != bvhf0) genStdMsgs(m_rpt);
    }
    if(m_mode=="QRA64") on_actionQRA64_triggered();
    if(m_mode=="FreqCal") on_actionFreqCal_triggered();
    if(m_mode=="ISCAT") on_actionISCAT_triggered();
    if(m_mode=="MSK144") {
      on_actionMSK144_triggered();
      if(m_config.contestMode() != bcontest0) genStdMsgs(m_rpt);
    }
    if(m_mode=="WSPR") on_actionWSPR_triggered();
    if(m_mode=="WSPR-LF") on_actionWSPR_LF_triggered();
    if(m_mode=="Echo") on_actionEcho_triggered();
  }

  m_config.transceiver_online ();
  if(!m_bFastMode) setXIT (ui->TxFreqSpinBox->value ());
  if(m_config.single_decode() or m_mode=="JT4") {
    ui->label_6->setText("Single-Period Decodes");
    ui->label_7->setText("Average Decodes");
  } else {
    ui->label_6->setText("Band Activity");
    ui->label_7->setText("Rx Frequency");
  }
  update_watchdog_label ();
  if(!m_splitMode) ui->cbCQTx->setChecked(false);
  if(!m_config.enable_VHF_features()) {
    ui->actionInclude_averaging->setEnabled(false);
    ui->actionInclude_correlation->setEnabled(false);
    ui->actionInclude_averaging->setChecked(false);
    ui->actionInclude_correlation->setChecked(false);
  }
}

void MainWindow::on_monitorButton_clicked (bool checked)
{
  if (!m_transmitting)
    {
      auto prior = m_monitoring;
      monitor (checked);

      if (checked && !prior)
        {
          if (m_config.monitor_last_used ())
            {
              // put rig back where it was when last in control
              setRig (m_lastMonitoredFrequency);
              setXIT (ui->TxFreqSpinBox->value ());
            }
          // ensure FreqCal triggers
          on_RxFreqSpinBox_valueChanged (ui->RxFreqSpinBox->value ());
        }

      //Get Configuration in/out of strict split and mode checking
      Q_EMIT m_config.sync_transceiver (true, checked);
    }
  else
    {
      ui->monitorButton->setChecked (false); // disallow
    }
}

void MainWindow::monitor (bool state)
{
  ui->monitorButton->setChecked (state);
  if (state) {
    m_diskData = false;	// no longer reading WAV files
    if (!m_monitoring) Q_EMIT resumeAudioInputStream ();
  } else {
    Q_EMIT suspendAudioInputStream ();
  }
  m_monitoring = state;
}

void MainWindow::on_actionAbout_triggered()                  //Display "About"
{
  CAboutDlg {this}.exec ();
}

void MainWindow::on_autoButton_clicked (bool checked)
{
  m_auto = checked;
  statusUpdate ();
  m_bEchoTxOK=false;
  if(m_auto and (m_mode=="Echo")) {
    m_nclearave=1;
    echocom_.nsum=0;
  }
  if(m_mode.startsWith ("WSPR"))  {
    QPalette palette {ui->sbTxPercent->palette ()};
    if(m_auto or m_pctx==0) {
      palette.setColor(QPalette::Base,Qt::white);
    } else {
      palette.setColor(QPalette::Base,Qt::yellow);
    }
    ui->sbTxPercent->setPalette(palette);
  }
}

void MainWindow::auto_tx_mode (bool state)
{
  ui->autoButton->setChecked (state);
  on_autoButton_clicked (state);
}

void MainWindow::keyPressEvent (QKeyEvent * e)
{
  int n;
  switch(e->key())
    {
    case Qt::Key_D:
      if(m_mode != "WSPR" && e->modifiers() & Qt::ShiftModifier) {
        if(!m_decoderBusy) {
          dec_data.params.newdat=0;
          dec_data.params.nagain=0;
          decode();
          return;
        }
      }
      break;
    case Qt::Key_M:
      if(e->modifiers() & Qt::ControlModifier) {
        ui->actionHide_Controls->toggle ();
       return;
      }
      break;
    case Qt::Key_F4:
      clearDX ();
      ui->dxCallEntry->setFocus();
      return;
    case Qt::Key_F6:
      if(e->modifiers() & Qt::ShiftModifier) {
        on_actionDecode_remaining_files_in_directory_triggered();
        return;
      }
      break;
    case Qt::Key_F10:
      if(e->modifiers() & Qt::ControlModifier) freqCalStep();
      break;
    case Qt::Key_F11:
      n=11;
      if(e->modifiers() & Qt::ControlModifier) n+=100;
      bumpFqso(n);
      return;
    case Qt::Key_F12:
      n=12;
      if(e->modifiers() & Qt::ControlModifier) n+=100;
      bumpFqso(n);
      return;
    case Qt::Key_F:
      if(e->modifiers() & Qt::ControlModifier) {
        if(ui->tabWidget->currentIndex()==0) {
          ui->tx5->clearEditText();
          ui->tx5->setFocus();
        } else {
          ui->freeTextMsg->clearEditText();
          ui->freeTextMsg->setFocus();
        }
        return;
      }
      break;
    case Qt::Key_G:
      if(e->modifiers() & Qt::AltModifier) {
        genStdMsgs(m_rpt);
        return;
      }
      break;
    case Qt::Key_H:
      if(e->modifiers() & Qt::AltModifier) {
        on_stopTxButton_clicked();
        return;
      }
      break;
    case Qt::Key_L:
      if(e->modifiers() & Qt::ControlModifier) {
        lookup();
        genStdMsgs(m_rpt);
        return;
      }
      break;
    case Qt::Key_V:
      if(e->modifiers() & Qt::AltModifier) {
        m_fileToSave = m_fnameWE;
        m_bAltV=true;
        return;
      }
      break;
    }

  QMainWindow::keyPressEvent (e);
}

void MainWindow::bumpFqso(int n)                                 //bumpFqso()
{
  int i;
  bool ctrl = (n>=100);
  n=n%100;
  i=ui->RxFreqSpinBox->value ();
  if(n==11) i--;
  if(n==12) i++;
  if (ui->RxFreqSpinBox->isEnabled ())
    {
      ui->RxFreqSpinBox->setValue (i);
    }
  if(ctrl and m_mode.startsWith ("WSPR")) {
    ui->WSPRfreqSpinBox->setValue(i);
  } else {
    if(ctrl && ui->TxFreqSpinBox->isEnabled ()) {
      ui->TxFreqSpinBox->setValue (i);
    }
  }
}

void MainWindow::displayDialFrequency ()
{
  Frequency dial_frequency {m_rigState.ptt () && m_rigState.split () ?
      m_rigState.tx_frequency () : m_rigState.frequency ()};

  // lookup band
  auto const& band_name = m_config.bands ()->find (dial_frequency);
  if (m_lastBand != band_name)
    {
      // only change this when necessary as we get called a lot and it
      // would trash any user input to the band combo box line edit
      ui->bandComboBox->setCurrentText (band_name);
      m_wideGraph->setRxBand (band_name);
      m_lastBand = band_name;
    }

  // search working frequencies for one we are within 10kHz of (1 Mhz
  // of on VHF and up)
  bool valid {false};
  quint64 min_offset {99999999};
  for (auto const& item : *m_config.frequencies ())
    {
      // we need to do specific checks for above and below here to
      // ensure that we can use unsigned Radio::Frequency since we
      // potentially use the full 64-bit unsigned range.
      auto const& working_frequency = item.frequency_;
      auto const& offset = dial_frequency > working_frequency ?
        dial_frequency - working_frequency :
        working_frequency - dial_frequency;
      if (offset < min_offset) {
        min_offset = offset;
      }
    }
  if (min_offset < 10000u || (m_config.enable_VHF_features() && min_offset < 1000000u)) {
    valid = true;
  }

  update_dynamic_property (ui->labDialFreq, "oob", !valid);
  ui->labDialFreq->setText (Radio::pretty_frequency_MHz_string (dial_frequency));
}

void MainWindow::statusChanged()
{
  statusUpdate ();
  QFile f {m_config.temp_dir ().absoluteFilePath ("wsjtx_status.txt")};
  if(f.open(QFile::WriteOnly | QIODevice::Text)) {
    QTextStream out(&f);
    out << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6)
        << ";" << m_mode << ";" << m_hisCall << ";"
        << ui->rptSpinBox->value() << ";" << m_modeTx << endl;
    f.close();
  } else {
    if (m_splash && m_splash->isVisible ()) m_splash->hide ();
    MessageBox::warning_message (this, tr ("Status File Error")
                                 , tr ("Cannot open \"%1\" for writing: %2")
                                 .arg (f.fileName ()).arg (f.errorString ()));
  }
  on_dxGridEntry_textChanged(m_hisGrid);
}

bool MainWindow::eventFilter (QObject * object, QEvent * event)
{
  switch (event->type())
    {
    case QEvent::KeyPress:
      // fall through
    case QEvent::MouseButtonPress:
      // reset the Tx watchdog
      tx_watchdog (false);
      break;

    case QEvent::ChildAdded:
      // ensure our child widgets get added to our event filter
      add_child_to_event_filter (static_cast<QChildEvent *> (event)->child ());
      break;

    case QEvent::ChildRemoved:
      // ensure our child widgets get d=removed from our event filter
      remove_child_from_event_filter (static_cast<QChildEvent *> (event)->child ());
      break;

    default: break;
    }
  return QObject::eventFilter(object, event);
}

void MainWindow::createStatusBar()                           //createStatusBar
{
  tx_status_label.setAlignment (Qt::AlignHCenter);
  tx_status_label.setMinimumSize (QSize  {150, 18});
  tx_status_label.setStyleSheet ("QLabel{background-color: #00ff00}");
  tx_status_label.setFrameStyle (QFrame::Panel | QFrame::Sunken);
  statusBar()->addWidget (&tx_status_label);

  config_label.setAlignment (Qt::AlignHCenter);
  config_label.setMinimumSize (QSize {80, 18});
  config_label.setFrameStyle (QFrame::Panel | QFrame::Sunken);
  statusBar()->addWidget (&config_label);
  config_label.hide ();         // only shown for non-default configuration

  mode_label.setAlignment (Qt::AlignHCenter);
  mode_label.setMinimumSize (QSize {80, 18});
  mode_label.setFrameStyle (QFrame::Panel | QFrame::Sunken);
  statusBar()->addWidget (&mode_label);

  last_tx_label.setAlignment (Qt::AlignHCenter);
  last_tx_label.setMinimumSize (QSize {150, 18});
  last_tx_label.setFrameStyle (QFrame::Panel | QFrame::Sunken);
  statusBar()->addWidget (&last_tx_label);

  band_hopping_label.setAlignment (Qt::AlignHCenter);
  band_hopping_label.setMinimumSize (QSize {90, 18});
  band_hopping_label.setFrameStyle (QFrame::Panel | QFrame::Sunken);

  statusBar()->addPermanentWidget(&progressBar, 1);
  progressBar.setMinimumSize (QSize {100, 18});
  progressBar.setFormat ("%v/%m");

  statusBar ()->addPermanentWidget (&watchdog_label);
  update_watchdog_label ();
}

void MainWindow::setup_status_bar (bool vhf)
{
  auto submode = current_submode ();
  if (vhf && submode != QChar::Null)
    {
      mode_label.setText (m_mode + " " + submode);
    }
  else
    {
      mode_label.setText (m_mode);
    }
  if ("ISCAT" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #ff9933}");
  } else if ("JT9" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #ff6ec7}");
  } else if ("JT4" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #cc99ff}");
  } else if ("Echo" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #66ffff}");
  } else if ("JT9+JT65" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #ffff66}");
  } else if ("JT65" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #66ff66}");
  } else if ("QRA64" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #99ff33}");
  } else if ("MSK144" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #ff6666}");
  } else if ("FT8" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #6699ff}");
  } else if ("FreqCal" == m_mode) {
    mode_label.setStyleSheet ("QLabel{background-color: #ff9933}");  }
  last_tx_label.setText (QString {});
  if (m_mode.contains (QRegularExpression {R"(^(Echo|ISCAT))"})) {
    if (band_hopping_label.isVisible ()) statusBar ()->removeWidget (&band_hopping_label);
  } else if (m_mode.startsWith ("WSPR")) {
    mode_label.setStyleSheet ("QLabel{background-color: #ff66ff}");
    if (!band_hopping_label.isVisible ()) {
      statusBar ()->addWidget (&band_hopping_label);
      band_hopping_label.show ();
    }
  } else {
    if (band_hopping_label.isVisible ()) statusBar ()->removeWidget (&band_hopping_label);
  }
}

void MainWindow::subProcessFailed (QProcess * process, int exit_code, QProcess::ExitStatus status)
{
  if (m_valid && (exit_code || QProcess::NormalExit != status))
    {
      QStringList arguments;
      for (auto argument: process->arguments ())
        {
          if (argument.contains (' ')) argument = '"' + argument + '"';
          arguments << argument;
        }
      if (m_splash && m_splash->isVisible ()) m_splash->hide ();
      MessageBox::critical_message (this, tr ("Subprocess Error")
                                    , tr ("Subprocess failed with exit code %1")
                                    .arg (exit_code)
                                    , tr ("Running: %1\n%2")
                                    .arg (process->program () + ' ' + arguments.join (' '))
                                    .arg (QString {process->readAllStandardError()}));
      QTimer::singleShot (0, this, SLOT (close ()));
      m_valid = false;          // ensures exit if still constructing
    }
}

void MainWindow::subProcessError (QProcess * process, QProcess::ProcessError)
{
  if (m_valid)
    {
      QStringList arguments;
      for (auto argument: process->arguments ())
        {
          if (argument.contains (' ')) argument = '"' + argument + '"';
          arguments << argument;
        }
      if (m_splash && m_splash->isVisible ()) m_splash->hide ();
      MessageBox::critical_message (this, tr ("Subprocess error")
                                    , tr ("Running: %1\n%2")
                                    .arg (process->program () + ' ' + arguments.join (' '))
                                    .arg (process->errorString ()));
      QTimer::singleShot (0, this, SLOT (close ()));
      m_valid = false;              // ensures exit if still constructing
    }
}

void MainWindow::closeEvent(QCloseEvent * e)
{
  m_valid = false;              // suppresses subprocess errors
  m_config.transceiver_offline ();
  writeSettings ();
  m_guiTimer.stop ();
  m_prefixes.reset ();
  m_shortcuts.reset ();
  m_mouseCmnds.reset ();
  if(m_mode!="MSK144") killFile();
  mem_jt9->detach();
  QFile quitFile {m_config.temp_dir ().absoluteFilePath (".quit")};
  quitFile.open(QIODevice::ReadWrite);
  QFile {m_config.temp_dir ().absoluteFilePath (".lock")}.remove(); // Allow jt9 to terminate
  bool b=proc_jt9.waitForFinished(1000);
  if(!b) proc_jt9.close();
  quitFile.remove();

  Q_EMIT finished ();

  QMainWindow::closeEvent (e);
}

void MainWindow::on_stopButton_clicked()                       //stopButton
{
  monitor (false);
  m_loopall=false;
  if(m_bRefSpec) {
    MessageBox::information_message (this, tr ("Reference spectrum saved"));
    m_bRefSpec=false;
  }
}

void MainWindow::on_actionRelease_Notes_triggered ()
{
  QDesktopServices::openUrl (QUrl {"http://physics.princeton.edu/pulsar/k1jt/v1.7_Features.txt"});
}

void MainWindow::on_actionOnline_User_Guide_triggered()      //Display manual
{
#if defined (CMAKE_BUILD)
  m_manual.display_html_url (QUrl {PROJECT_MANUAL_DIRECTORY_URL}, PROJECT_MANUAL);
#endif
}

//Display local copy of manual
void MainWindow::on_actionLocal_User_Guide_triggered()
{
#if defined (CMAKE_BUILD)
  m_manual.display_html_file (m_config.doc_dir (), PROJECT_MANUAL);
#endif
}

void MainWindow::on_actionWide_Waterfall_triggered()      //Display Waterfalls
{
  m_wideGraph->show();
}

void MainWindow::on_actionEcho_Graph_triggered()
{
  m_echoGraph->show();
}

void MainWindow::on_actionFast_Graph_triggered()
{
  m_fastGraph->show();
}

// This allows the window to shrink by removing certain things
// and reducing space used by controls
void MainWindow::on_actionHide_Controls_toggled (bool checked)
{
  int spacing = checked ? 1 : 6;

  if (checked) {
      statusBar ()->removeWidget (&auto_tx_label);
      minimumSize().setHeight(450);
      minimumSize().setWidth(700);
      restoreGeometry(m_geometryNoControls);
      updateGeometry();
      //resize(450,700); // how to auto-shrink it?
  }
  else {
      m_geometryNoControls = saveGeometry();
      statusBar ()->addWidget(&auto_tx_label);
      minimumSize().setHeight(520);
      minimumSize().setWidth(770);
  }
  ui->menuBar->setVisible(!checked);
  if(m_mode!="FreqCal") {
    ui->label_6->setVisible(!checked);
    ui->label_7->setVisible(!checked);
    ui->decodedTextLabel2->setVisible(!checked);
    ui->line_2->setVisible(!checked);
  }
  ui->line->setVisible(!checked);
  ui->decodedTextLabel->setVisible(!checked);
  ui->gridLayout_5->layout()->setSpacing(spacing);
  ui->horizontalLayout->layout()->setSpacing(spacing);
  ui->horizontalLayout_2->layout()->setSpacing(spacing);
  ui->horizontalLayout_3->layout()->setSpacing(spacing);
  ui->horizontalLayout_4->layout()->setSpacing(spacing);
  ui->horizontalLayout_5->layout()->setSpacing(spacing);
  ui->horizontalLayout_6->layout()->setSpacing(spacing);
  ui->horizontalLayout_7->layout()->setSpacing(spacing);
  ui->horizontalLayout_8->layout()->setSpacing(spacing);
  ui->horizontalLayout_9->layout()->setSpacing(spacing);
  ui->horizontalLayout_10->layout()->setSpacing(spacing);
  ui->horizontalLayout_11->layout()->setSpacing(spacing);
  ui->horizontalLayout_12->layout()->setSpacing(spacing);
  ui->horizontalLayout_13->layout()->setSpacing(spacing);
  ui->horizontalLayout_14->layout()->setSpacing(spacing);
  ui->verticalLayout->layout()->setSpacing(spacing);
  ui->verticalLayout_2->layout()->setSpacing(spacing);
  ui->verticalLayout_3->layout()->setSpacing(spacing);
  ui->verticalLayout_4->layout()->setSpacing(spacing);
  ui->verticalLayout_5->layout()->setSpacing(spacing);
  ui->verticalLayout_7->layout()->setSpacing(spacing);
  ui->verticalLayout_8->layout()->setSpacing(spacing);
  ui->tab->layout()->setSpacing(spacing);
}

void MainWindow::on_actionAstronomical_data_toggled (bool checked)
{
  if (checked)
    {
      m_astroWidget.reset (new Astro {m_settings, &m_config});

      // hook up termination signal
      connect (this, &MainWindow::finished, m_astroWidget.data (), &Astro::close);
      connect (m_astroWidget.data (), &Astro::tracking_update, [this] {
          m_astroCorrection = {};
          setRig ();
          setXIT (ui->TxFreqSpinBox->value ());
          displayDialFrequency ();
        });
      m_astroWidget->showNormal();
      m_astroWidget->raise ();
      m_astroWidget->activateWindow ();
      m_astroWidget->nominal_frequency (m_freqNominal, m_freqTxNominal);
    }
  else
    {
      m_astroWidget.reset ();
    }
}

void MainWindow::on_actionMessage_averaging_triggered()
{
  if (!m_msgAvgWidget)
    {
      m_msgAvgWidget.reset (new MessageAveraging {m_settings, m_config.decoded_text_font ()});

      // Connect signals from Message Averaging window
      connect (this, &MainWindow::finished, m_msgAvgWidget.data (), &MessageAveraging::close);
    }
  m_msgAvgWidget->showNormal();
  m_msgAvgWidget->raise ();
  m_msgAvgWidget->activateWindow ();
}

void MainWindow::on_actionOpen_triggered()                     //Open File
{
  monitor (false);

  QString fname;
  fname=QFileDialog::getOpenFileName(this, "Open File", m_path,
                                     "WSJT Files (*.wav)");
  if(!fname.isEmpty ()) {
    m_path=fname;
    int i1=fname.lastIndexOf("/");
    QString baseName=fname.mid(i1+1);
    tx_status_label.setStyleSheet("QLabel{background-color: #99ffff}");
    tx_status_label.setText(" " + baseName + " ");
    on_stopButton_clicked();
    m_diskData=true;
    read_wav_file (fname);
  }
}

void MainWindow::read_wav_file (QString const& fname)
{
  // call diskDat() when done
  int i0=fname.lastIndexOf("_");
  int i1=fname.indexOf(".wav");
  m_nutc0=m_UTCdisk;
  m_UTCdisk=fname.mid(i0+1,i1-i0-1).toInt();
  m_wav_future_watcher.setFuture (QtConcurrent::run ([this, fname] {
        auto basename = fname.mid (fname.lastIndexOf ('/') + 1);
        auto pos = fname.indexOf (".wav", 0, Qt::CaseInsensitive);
        // global variables and threads do not mix well, this needs changing
        dec_data.params.nutc = 0;
        if (pos > 0)
          {
            if (pos == fname.indexOf ('_', -11) + 7)
              {
                dec_data.params.nutc = fname.mid (pos - 6, 6).toInt ();
              }
            else
              {
                dec_data.params.nutc = 100 * fname.mid (pos - 4, 4).toInt ();
              }
          }
        BWFFile file {QAudioFormat {}, fname};
        bool ok=file.open (BWFFile::ReadOnly);
        if(ok) {
          auto bytes_per_frame = file.format ().bytesPerFrame ();
          qint64 max_bytes = std::min (std::size_t (m_TRperiod * RX_SAMPLE_RATE),
              sizeof (dec_data.d2) / sizeof (dec_data.d2[0]))* bytes_per_frame;
          auto n = file.read (reinterpret_cast<char *> (dec_data.d2),
                            std::min (max_bytes, file.size ()));
          int frames_read = n / bytes_per_frame;
        // zero unfilled remaining sample space
          std::memset(&dec_data.d2[frames_read],0,max_bytes - n);
          if (11025 == file.format ().sampleRate ()) {
            short sample_size = file.format ().sampleSize ();
            wav12_ (dec_data.d2, dec_data.d2, &frames_read, &sample_size);
          }
          dec_data.params.kin = frames_read;
          dec_data.params.newdat = 1;
        } else {
          dec_data.params.kin = 0;
          dec_data.params.newdat = 0;
        }
      }));
}

void MainWindow::on_actionOpen_next_in_directory_triggered()   //Open Next
{
  monitor (false);

  int i,len;
  QFileInfo fi(m_path);
  QStringList list;
  list= fi.dir().entryList().filter(".wav",Qt::CaseInsensitive);
  for (i = 0; i < list.size()-1; ++i) {
    len=list.at(i).length();
    if(list.at(i)==m_path.right(len)) {
      int n=m_path.length();
      QString fname=m_path.replace(n-len,len,list.at(i+1));
      m_path=fname;
      int i1=fname.lastIndexOf("/");
      QString baseName=fname.mid(i1+1);
      tx_status_label.setStyleSheet("QLabel{background-color: #99ffff}");
      tx_status_label.setText(" " + baseName + " ");
      m_diskData=true;
      read_wav_file (fname);
      if(m_loopall and (i==list.size()-2)) {
        m_loopall=false;
        m_bNoMoreFiles=true;
      }
      return;
    }
  }
}
//Open all remaining files
void MainWindow::on_actionDecode_remaining_files_in_directory_triggered()
{
  m_loopall=true;
  on_actionOpen_next_in_directory_triggered();
}

void MainWindow::diskDat()                                   //diskDat()
{
  if(dec_data.params.kin>0) {
    int k;
    int kstep=m_FFTSize;
    m_diskData=true;
    float db=m_config.degrade();
    float bw=m_config.RxBandwidth();
    if(db > 0.0) degrade_snr_(dec_data.d2,&dec_data.params.kin,&db,&bw);
    for(int n=1; n<=m_hsymStop; n++) {                      // Do the waterfall spectra
      k=(n+1)*kstep;
      if(k > dec_data.params.kin) break;
      dec_data.params.npts8=k/8;
      dataSink(k);
      qApp->processEvents();                                //Update the waterfall
    }
  } else {
    MessageBox::information_message(this, tr("No data read from disk. Wrong file format?"));
  }
}

//Delete ../save/*.wav
void MainWindow::on_actionDelete_all_wav_files_in_SaveDir_triggered()
{
  auto button = MessageBox::query_message (this, tr ("Confirm Delete"),
                                             tr ("Are you sure you want to delete all *.wav and *.c2 files in \"%1\"?")
                                             .arg (QDir::toNativeSeparators (m_config.save_directory ().absolutePath ())));
  if (MessageBox::Yes == button) {
    Q_FOREACH (auto const& file
               , m_config.save_directory ().entryList ({"*.wav", "*.c2"}, QDir::Files | QDir::Writable)) {
      m_config.save_directory ().remove (file);
    }
  }
}

void MainWindow::on_actionNone_triggered()                    //Save None
{
  m_saveDecoded=false;
  m_saveAll=false;
  ui->actionNone->setChecked(true);
}

void MainWindow::on_actionSave_decoded_triggered()
{
  m_saveDecoded=true;
  m_saveAll=false;
  ui->actionSave_decoded->setChecked(true);
}

void MainWindow::on_actionSave_all_triggered()                //Save All
{
  m_saveDecoded=false;
  m_saveAll=true;
  ui->actionSave_all->setChecked(true);
}

void MainWindow::on_actionKeyboard_shortcuts_triggered()
{
  if (!m_shortcuts)
    {
      QFont font;
      font.setPointSize (10);
      m_shortcuts.reset (new HelpTextWindow {tr ("Keyboard Shortcuts")
            , ":/shortcuts.txt", font});
    }
  m_shortcuts->showNormal ();
  m_shortcuts->raise ();
}

void MainWindow::on_actionSpecial_mouse_commands_triggered()
{
  if (!m_mouseCmnds)
    {
      QFont font;
      font.setPointSize (10);
      m_mouseCmnds.reset (new HelpTextWindow {tr ("Special Mouse Commands")
            , ":/mouse_commands.txt", font});
    }
  m_mouseCmnds->showNormal ();
  m_mouseCmnds->raise ();
}

void MainWindow::on_DecodeButton_clicked (bool /* checked */)	//Decode request
{
  if(m_mode=="MSK144") {
    ui->DecodeButton->setChecked(false);
  } else {
    if(!m_mode.startsWith ("WSPR") && !m_decoderBusy) {
      dec_data.params.newdat=0;
      dec_data.params.nagain=1;
      m_blankLine=false; // don't insert the separator again
      decode();
    }
  }
}

void MainWindow::freezeDecode(int n)                          //freezeDecode()
{
  if((n%100)==2) on_DecodeButton_clicked (true);
}

void MainWindow::on_ClrAvgButton_clicked()
{
  m_nclearave=1;
  if(m_msgAvgWidget != NULL) {
    if(m_msgAvgWidget->isVisible()) m_msgAvgWidget->displayAvg("");
  }
}

void MainWindow::msgAvgDecode2()
{
  on_DecodeButton_clicked (true);
}

void MainWindow::decode()                                       //decode()
{
  if(!m_dataAvailable or m_TRperiod==0) return;
  ui->DecodeButton->setChecked (true);
  if(!dec_data.params.nagain && m_diskData && !m_bFastMode && m_mode!="FT8") {
    dec_data.params.nutc=dec_data.params.nutc/100;
  }
  if(dec_data.params.nagain==0 && dec_data.params.newdat==1 && (!m_diskData)) {
    qint64 ms = QDateTime::currentMSecsSinceEpoch() % 86400000;
    int imin=ms/60000;
    int ihr=imin/60;
    imin=imin % 60;
    if(m_TRperiod>=60) imin=imin - (imin % (m_TRperiod/60));
    dec_data.params.nutc=100*ihr + imin;
    if(m_mode=="ISCAT" or m_mode=="MSK144" or m_bFast9 or m_mode=="FT8") {
      QDateTime t=QDateTime::currentDateTimeUtc().addSecs(2-m_TRperiod);
      ihr=t.toString("hh").toInt();
      imin=t.toString("mm").toInt();
      int isec=t.toString("ss").toInt();
      isec=isec - isec%m_TRperiod;
      dec_data.params.nutc=10000*ihr + 100*imin + isec;
    }
  }

  if(m_nPick==1 and !m_diskData) {
    QDateTime t=QDateTime::currentDateTimeUtc();
    int ihr=t.toString("hh").toInt();
    int imin=t.toString("mm").toInt();
    int isec=t.toString("ss").toInt();
    isec=isec - isec%m_TRperiod;
    dec_data.params.nutc=10000*ihr + 100*imin + isec;
  }
  if(m_nPick==2) dec_data.params.nutc=m_nutc0;
  dec_data.params.nfqso=m_wideGraph->rxFreq();
  qint32 depth {m_ndepth};
  if (!ui->actionInclude_averaging->isEnabled ()) depth &= ~16;
  if (!ui->actionInclude_correlation->isEnabled ()) depth &= ~32;
  if (!ui->actionEnable_AP_DXcall->isEnabled ()) depth &= ~64;
  dec_data.params.ndepth=depth;
  dec_data.params.n2pass=1;
  if(m_config.twoPass()) dec_data.params.n2pass=2;
  dec_data.params.nranera=m_config.ntrials();
  dec_data.params.naggressive=m_config.aggressive();
  dec_data.params.nrobust=0;
  dec_data.params.ndiskdat=0;
  if(m_diskData) dec_data.params.ndiskdat=1;
  dec_data.params.nfa=m_wideGraph->nStartFreq();
  dec_data.params.nfSplit=m_wideGraph->Fmin();
  dec_data.params.nfb=m_wideGraph->Fmax();
  dec_data.params.ntol=ui->sbFtol->value ();
  if(m_mode=="JT9+JT65" or !m_config.enable_VHF_features()) {
    dec_data.params.ntol=20;
    dec_data.params.naggressive=0;
  }
  if(dec_data.params.nutc < m_nutc0) m_RxLog = 1;       //Date and Time to all.txt
  if(dec_data.params.newdat==1 and !m_diskData) m_nutc0=dec_data.params.nutc;
  dec_data.params.ntxmode=9;
  if(m_modeTx=="JT65") dec_data.params.ntxmode=65;
  dec_data.params.nmode=9;
  if(m_mode=="JT65") dec_data.params.nmode=65;
  if(m_mode=="QRA64") dec_data.params.nmode=164;
  if(m_mode=="QRA64") dec_data.params.ntxmode=164;
  if(m_mode=="JT9+JT65") dec_data.params.nmode=9+65;  // = 74
  if(m_mode=="JT4") {
    dec_data.params.nmode=4;
    dec_data.params.ntxmode=4;
  }
  if(m_mode=="FT8") dec_data.params.nmode=8;
  dec_data.params.ntrperiod=m_TRperiod;
  dec_data.params.nsubmode=m_nSubMode;
  if(m_mode=="QRA64") dec_data.params.nsubmode=100 + m_nSubMode;
  dec_data.params.minw=0;
  dec_data.params.nclearave=m_nclearave;
  if(m_nclearave!=0) {
    QFile f(m_config.temp_dir ().absoluteFilePath ("avemsg.txt"));
    f.remove();
  }
  dec_data.params.dttol=m_DTtol;
  dec_data.params.emedelay=0.0;
  if(m_config.decode_at_52s()) dec_data.params.emedelay=2.5;
  dec_data.params.minSync=ui->syncSpinBox->isVisible () ? m_minSync : 0;
  dec_data.params.nexp_decode=0;
  if(m_config.single_decode()) dec_data.params.nexp_decode += 32;
  if(m_config.enable_VHF_features()) dec_data.params.nexp_decode += 64;


  strncpy(dec_data.params.datetime, m_dateTime.toLatin1(), 20);
  strncpy(dec_data.params.mycall, (m_config.my_callsign()+"            ").toLatin1(),12);
  strncpy(dec_data.params.mygrid, (m_config.my_grid()+"      ").toLatin1(),6);
  QString hisCall {ui->dxCallEntry->text ()};
  QString hisGrid {ui->dxGridEntry->text ()};
  strncpy(dec_data.params.hiscall,(hisCall + "            ").toLatin1 ().constData (), 12);
  strncpy(dec_data.params.hisgrid,(hisGrid + "      ").toLatin1 ().constData (), 6);

  //newdat=1  ==> this is new data, must do the big FFT
  //nagain=1  ==> decode only at fQSO +/- Tol

  char *to = (char*)mem_jt9->data();
  char *from = (char*) dec_data.ss;
  int size=sizeof(struct dec_data);
  if(dec_data.params.newdat==0) {
    int noffset {offsetof (struct dec_data, params.nutc)};
    to += noffset;
    from += noffset;
    size -= noffset;
  }
  if(m_mode=="ISCAT" or m_mode=="MSK144" or m_bFast9) {
    float t0=m_t0;
    float t1=m_t1;
    qApp->processEvents();                                //Update the waterfall
    if(m_nPick > 0) {
      t0=m_t0Pick;
      t1=m_t1Pick;
//      if(t1 > m_kdone/12000.0 and !m_config.realTimeDecode()) t1=m_kdone/12000.0;
    }
    static short int d2b[360000];
    narg[0]=dec_data.params.nutc;
    if(m_kdone>12000*m_TRperiod) {
      m_kdone=12000*m_TRperiod;
    }
    narg[1]=m_kdone;
    narg[2]=m_nSubMode;
    narg[3]=dec_data.params.newdat;
    narg[4]=dec_data.params.minSync;
    narg[5]=m_nPick;
    narg[6]=1000.0*t0;
    narg[7]=1000.0*t1;
    narg[8]=2;                                //Max decode lines per decode attempt
    if(dec_data.params.minSync<0) narg[8]=50;
    if(m_mode=="ISCAT") narg[9]=101;          //ISCAT
    if(m_mode=="JT9") narg[9]=102;            //Fast JT9
    if(m_mode=="MSK144") narg[9]=104;         //MSK144
    narg[10]=ui->RxFreqSpinBox->value();
    narg[11]=ui->sbFtol->value ();
    narg[12]=0;
    narg[13]=-1;
    narg[14]=m_config.aggressive();
    memcpy(d2b,dec_data.d2,2*360000);
    watcher3.setFuture (QtConcurrent::run (std::bind (fast_decode_,&d2b[0],
        &narg[0],&m_TRperiod,&m_msg[0][0],
        dec_data.params.mycall,dec_data.params.hiscall,8000,12,12)));
  } else {
    memcpy(to, from, qMin(mem_jt9->size(), size));
    QFile {m_config.temp_dir ().absoluteFilePath (".lock")}.remove (); // Allow jt9 to start
    decodeBusy(true);
  }
}

void::MainWindow::fast_decode_done()
{
  float t,tmax=-99.0;
  QString msg0;
  dec_data.params.nagain=false;
  dec_data.params.ndiskdat=false;
//  if(m_msg[0][0]==0) m_bDecoded=false;
  for(int i=0; i<100; i++) {
    int i1=msg0.indexOf(m_baseCall);
    int i2=msg0.indexOf(m_hisCall);
    if ((m_mode == "MSK144" || m_bFast9)
       && ui->cbAutoSeq->isVisible () && ui->cbAutoSeq->isChecked ()
       && tmax >= 0.0 && i1 > 10 && i2 > i1 + 3) {
      if (msg0.indexOf (" 73") < 0 || m_ntx != 6) {
        processMessage(msg0,43,false);
      }
    }
    if(m_msg[i][0]==0) break;
    QString message=QString::fromLatin1(m_msg[i]);
    m_msg[i][0]=0;
    if(message.length()>80) message=message.mid(0,80);
    if(narg[13]/8==narg[12]) message=message.trimmed().replace("<...>",m_calls);

//Left (Band activity) window
    DecodedText decodedtext;
    decodedtext=message.replace(QChar::LineFeed,"");
    if(!m_bFastDone) {
      ui->decodedTextBrowser->displayDecodedText (decodedtext,m_baseCall,m_config.DXCC(),
         m_logBook,m_config.color_CQ(),m_config.color_MyCall(),m_config.color_DXCC(),
         m_config.color_NewCall());
    }

    t=message.mid(10,5).toFloat();
    if(t>tmax) {
      msg0=message;
      tmax=t;
      m_bDecoded=true;
    }
    postDecode (true, decodedtext.string ());
    writeAllTxt(message);

    if(m_mode=="JT9" or m_mode=="MSK144") {
// find and extract any report for myCall
      QString msg=message.mid(0,4) + message.mid(6,-1);
      decodedtext=msg.replace(QChar::LineFeed,"");
      bool stdMsg = decodedtext.report(m_baseCall,
              Radio::base_callsign(ui->dxCallEntry->text()), m_rptRcvd);

// extract details and send to PSKreporter
      if(m_config.spot_to_psk_reporter() and stdMsg and !m_diskData) {
        pskPost(decodedtext);
      }
    }
  }
  m_startAnother=m_loopall;
  m_nPick=0;
  ui->DecodeButton->setChecked (false);
  m_bFastDone=false;
}

void MainWindow::writeAllTxt(QString message)
{
  // Write decoded text to file "ALL.TXT".
      QFile f {m_dataDir.absoluteFilePath ("ALL.TXT")};
      if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
        QTextStream out(&f);
        if(m_RxLog==1) {
          out << QDateTime::currentDateTimeUtc().toString("yyyy-MM-dd hh:mm")
              << "  " << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6) << " MHz  "
              << m_mode << endl;
          m_RxLog=0;
        }
//        int n=message.length();
//        out << message.mid(0,n-2) << endl;
        out << message << endl;
        f.close();
      } else {
        MessageBox::warning_message (this, tr ("File Open Error")
                                     , tr ("Cannot open \"%1\" for append: %2")
                                     .arg (f.fileName ()).arg (f.errorString ()));
      }
}

void MainWindow::decodeDone ()
{
  dec_data.params.nagain=0;
  dec_data.params.ndiskdat=0;
  m_nclearave=0;
  QFile {m_config.temp_dir ().absoluteFilePath (".lock")}.open(QIODevice::ReadWrite);
  ui->DecodeButton->setChecked (false);
  decodeBusy(false);
  m_RxLog=0;
  m_blankLine=true;
}

void MainWindow::readFromStdout()                             //readFromStdout
{
  while(proc_jt9.canReadLine()) {
    QByteArray t=proc_jt9.readLine();
    bool bAvgMsg=false;
    int navg=0;
    if(t.indexOf("<DecodeFinished>") >= 0) {
      if(m_mode=="QRA64") m_wideGraph->drawRed(0,0);
      /*
      if(m_mode=="QRA64") {
        char name[512];
        QString fname=m_config.temp_dir ().absoluteFilePath ("red.dat");
        strncpy(name,fname.toLatin1(), sizeof (name) - 1);
        name[sizeof (name) - 1] = '\0';
        FILE* fp=fopen(name,"rb");
        if(fp != NULL) {
          int ia,ib;
          memset(dec_data.sred,0,4*5760);
          fread(&ia,4,1,fp);
          fread(&ib,4,1,fp);
          fread(&dec_data.sred[ia-1],4,ib-ia+1,fp);
          m_wideGraph->drawRed(ia,ib);

        }
      }
      */
      m_bDecoded = t.mid (20).trimmed ().toInt () > 0;
      if(!m_diskData) killFileTimer.start (3*1000*m_TRperiod/4); //Kill in 45 s
      decodeDone ();
      m_startAnother=m_loopall;
      if(m_bNoMoreFiles) {
        MessageBox::information_message(this, tr("No more files to open."));
        m_bNoMoreFiles=false;
      }
      return;
    } else {
      if(m_mode=="JT4" or m_mode=="JT65" or m_mode=="QRA64") {
        int n=t.indexOf("f");
        if(n<0) n=t.indexOf("d");
        if(n>0) {
          QString tt=t.mid(n+1,1);
          navg=tt.toInt();
          if(navg==0) {
            char c = tt.data()->toLatin1();
            if(int(c)>=65 and int(c)<=90) navg=int(c)-54;
          }
          if(navg>1 or t.indexOf("f*")>0) bAvgMsg=true;
        }
      }
      QFile f {m_dataDir.absoluteFilePath ("ALL.TXT")};
      if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
        QTextStream out(&f);
        if(m_RxLog==1) {
          out << QDateTime::currentDateTimeUtc().toString("yyyy-MM-dd hh:mm")
              << "  " << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6) << " MHz  "
              << m_mode << endl;
          m_RxLog=0;
        }
        int n=t.length();
        out << t.mid(0,n-2) << endl;
        f.close();
      } else {
        MessageBox::warning_message (this, tr ("File Open Error")
                                     , tr ("Cannot open \"%1\" for append: %2")
                                     .arg (f.fileName ()).arg (f.errorString ()));
      }

        if (m_config.insert_blank () && m_blankLine)
          {
            QString band;
            if (QDateTime::currentMSecsSinceEpoch() / 1000 - m_secBandChanged > 50)
              {
                band = ' ' + m_config.bands ()->find (m_freqNominal);
              }
            ui->decodedTextBrowser->insertLineSpacer (band.rightJustified  (40, '-'));
            m_blankLine = false;
          }

      DecodedText decodedtext;
      decodedtext = t.replace(QChar::LineFeed,""); //t.replace(QChar::LineFeed,"").mid(0,t.length()-4);

        //Left (Band activity) window
      if(!bAvgMsg) {
        ui->decodedTextBrowser->displayDecodedText(decodedtext,m_baseCall,m_config.DXCC(),
               m_logBook,m_config.color_CQ(),m_config.color_MyCall(),
               m_config.color_DXCC(), m_config.color_NewCall());
      }

        //Right (Rx Frequency) window
      bool bDisplayRight=bAvgMsg;
      if(!m_config.enable_VHF_features() and
              (abs(decodedtext.frequencyOffset() - m_wideGraph->rxFreq()) <= 10)) bDisplayRight=true;
      if (bDisplayRight) {
          // This msg is within 10 hertz of our tuned frequency, or a JT4 or JT65 avg
        ui->decodedTextBrowser2->displayDecodedText(decodedtext,m_baseCall,false,
               m_logBook,m_config.color_CQ(),m_config.color_MyCall(),
               m_config.color_DXCC(),m_config.color_NewCall());

        if(m_mode!="JT4") {
          bool b65=decodedtext.isJT65();
          if(b65 and m_modeTx!="JT65") on_pbTxMode_clicked();
          if(!b65 and m_modeTx=="JT65") on_pbTxMode_clicked();
        }
        m_QSOText=decodedtext;
      }
      if(m_mode=="FT8") FT8_AutoSeq(decodedtext.string());

      postDecode (true, decodedtext.string ());

      // find and extract any report for myCall
      bool stdMsg = decodedtext.report(m_baseCall,
          Radio::base_callsign(ui->dxCallEntry->text()), m_rptRcvd);
      // extract details and send to PSKreporter
      int nsec=QDateTime::currentMSecsSinceEpoch()/1000-m_secBandChanged;
      bool okToPost=(nsec>50);
      if(m_config.spot_to_psk_reporter () and stdMsg and !m_diskData and okToPost) {
        pskPost(decodedtext);
      }

      if((m_mode=="JT4" or m_mode=="JT65" or m_mode=="QRA64") and m_msgAvgWidget!=NULL) {
        if(m_msgAvgWidget->isVisible()) {
          QFile f(m_config.temp_dir ().absoluteFilePath ("avemsg.txt"));
          if(f.open(QIODevice::ReadOnly | QIODevice::Text)) {
            QTextStream s(&f);
            QString t=s.readAll();
            m_msgAvgWidget->displayAvg(t);
          }
        }
      }
    }
  }
}

void MainWindow::FT8_AutoSeq(QString message)
{
  int i1=message.indexOf(m_baseCall);
  int i2=message.indexOf(m_hisCall);
  if(i1>10 and i2>i1+3) {
    if ((message.indexOf (" 73") < 0 || m_ntx != 6)) {
      processMessage (message,43,false);
    }
  }
}

void MainWindow::pskPost(DecodedText decodedtext)
{
  QString msgmode=m_mode;
  if(m_mode=="JT9+JT65") {
    msgmode="JT9";
    if (decodedtext.isJT65()) msgmode="JT65";
  }
  QString deCall;
  QString grid;
  decodedtext.deCallAndGrid(/*out*/deCall,grid);
  int audioFrequency = decodedtext.frequencyOffset();
  int snr = decodedtext.snr();
  Frequency frequency = m_freqNominal + audioFrequency;
  pskSetLocal ();
  if(grid_regexp.exactMatch (grid)) {
    // qDebug() << "To PSKreporter:" << deCall << grid << frequency << msgmode << snr;
    psk_Reporter->addRemoteStation(deCall,grid,QString::number(frequency),msgmode,
           QString::number(snr),QString::number(QDateTime::currentDateTime().toTime_t()));
  }
}

void MainWindow::killFile ()
{
  if (m_fnameWE.size () &&
      !(m_saveAll || (m_saveDecoded && m_bDecoded) || m_fnameWE == m_fileToSave)) {
    QFile f1 {m_fnameWE + ".wav"};
    if(f1.exists()) f1.remove();
    if(m_mode.startsWith ("WSPR")) {
      QFile f2 {m_fnameWE + ".c2"};
      if(f2.exists()) f2.remove();
    }
  }
}

void MainWindow::on_EraseButton_clicked()                          //Erase
{
  qint64 ms=QDateTime::currentMSecsSinceEpoch();
  ui->decodedTextBrowser2->clear();
  if(m_mode.startsWith ("WSPR") or m_mode=="Echo" or m_mode=="ISCAT") {
    ui->decodedTextBrowser->clear();
  } else {
    m_QSOText.clear();
    if((ms-m_msErase)<500) {
      ui->decodedTextBrowser->clear();
      m_messageClient->clear_decodes ();
      QFile f(m_config.temp_dir ().absoluteFilePath ("decoded.txt"));
      if(f.exists()) f.remove();
    }
  }
  m_msErase=ms;
  set_dateTimeQSO(-1);
}

void MainWindow::decodeBusy(bool b)                             //decodeBusy()
{
  if (!b) m_optimizingProgress.reset ();
  m_decoderBusy=b;
  ui->DecodeButton->setEnabled(!b);
  ui->actionOpen->setEnabled(!b);
  ui->actionOpen_next_in_directory->setEnabled(!b);
  ui->actionDecode_remaining_files_in_directory->setEnabled(!b);

  statusUpdate ();
}

//------------------------------------------------------------- //guiUpdate()
void MainWindow::guiUpdate()
{
  static char message[29];
  static char msgsent[29];
  double txDuration;
  QString rt;

  if(m_TRperiod==0) m_TRperiod=60;
  txDuration=0.0;
  if(m_modeTx=="FT8")  txDuration=1.0 + 79*2048/12000.0;      // FT8
  if(m_modeTx=="JT4")  txDuration=1.0 + 207.0*2520/11025.0;   // JT4
  if(m_modeTx=="JT9")  txDuration=1.0 + 85.0*m_nsps/12000.0;  // JT9
  if(m_modeTx=="JT65") txDuration=1.0 + 126*4096/11025.0;     // JT65
  if(m_mode=="QRA64")  txDuration=1.0 + 84*6912/12000.0;      // QRA64
  if(m_mode=="WSPR") txDuration=2.0 + 162*8192/12000.0;       // WSPR
  if(m_mode=="WSPR-LF") txDuration=2.0 + 114*24576/12000.0;   // WSPR-LF
  if(m_mode=="ISCAT" or m_mode=="MSK144" or m_bFast9) {
    txDuration=m_TRperiod-0.25; // ISCAT, JT9-fast, MSK144
  }

  double tx1=0.0;
  double tx2=txDuration;
  if((icw[0]>0) and (!m_bFast9)) tx2 += icw[0]*2560.0/48000.0;  //Full length including CW ID
  if(tx2>m_TRperiod) tx2=m_TRperiod;

  if(!m_txFirst and !m_mode.startsWith ("WSPR")) {
    tx1 += m_TRperiod;
    tx2 += m_TRperiod;
  }

  qint64 ms = QDateTime::currentMSecsSinceEpoch() % 86400000;
  int nsec=ms/1000;
  double tsec=0.001*ms;
  double t2p=fmod(tsec,2*m_TRperiod);
  m_s6=fmod(tsec,6.0);
  m_nseq = nsec % m_TRperiod;
  m_tRemaining=m_TRperiod - fmod(tsec,double(m_TRperiod));

  if(m_mode=="Echo") {
    txDuration=2.5;
    tx1=0.0;
    tx2=txDuration;
    if(m_auto and m_s6>4.0) m_bEchoTxOK=true;
    if(m_transmitting) m_bEchoTxed=true;
  }

  if(m_mode.startsWith ("WSPR")) {
    if(m_nseq==0 and m_ntr==0) {                   //Decide whether to Tx or Rx
      m_tuneup=false;                              //This is not an ATU tuneup
      if(m_pctx==0) m_WSPR_tx_next = false;        //Don't transmit if m_pctx=0
      bool btx = m_auto && m_WSPR_tx_next;         // To Tx, we need m_auto and
                                                   // scheduled transmit
      if(m_auto and m_txNext) btx=true;            //TxNext button overrides
      if(m_auto and m_pctx==100) btx=true;         //Always transmit

      if(btx) {
        m_ntr=-1;                                  //This says we will have transmitted
        m_txNext=false;
        ui->pbTxNext->setChecked(false);
        m_bTxTime=true;                            //Start a WSPR Tx sequence
      } else {
// This will be a WSPR Rx sequence.
        m_ntr=1;                                   //This says we will have received
        m_bTxTime=false;                           //Start a WSPR Rx sequence
      }
    }

  } else {
// For all modes other than WSPR
    m_bTxTime = (t2p >= tx1) and (t2p < tx2);
    if(m_mode=="Echo") m_bTxTime = m_bTxTime and m_bEchoTxOK;
  }
  if(m_tune) m_bTxTime=true;                 //"Tune" takes precedence

  if(m_transmitting or m_auto or m_tune) {
// Check for "txboth" (testing purposes only)
    QFile f(m_appDir + "/txboth");
    if(f.exists() and
       fmod(tsec,m_TRperiod)<(1.0 + 85.0*m_nsps/12000.0)) m_bTxTime=true;

// Don't transmit another mode in the 30 m WSPR sub-band
    Frequency onAirFreq = m_freqNominal + ui->TxFreqSpinBox->value();
    if ((onAirFreq > 10139900 and onAirFreq < 10140320) and
        !m_mode.startsWith ("WSPR")) {
      m_bTxTime=false;
//      if (m_tune) stop_tuning ();
      if (m_auto) auto_tx_mode (false);
      if(onAirFreq!=m_onAirFreq0) {
        m_onAirFreq0=onAirFreq;
        auto const& message = tr ("Please choose another Tx frequency."
                                  " WSJT-X will not knowingly transmit another"
                                  " mode in the WSPR sub-band on 30m.");
#if QT_VERSION >= 0x050400
        QTimer::singleShot (0, [=] { // don't block guiUpdate
            MessageBox::warning_message (this, tr ("WSPR Guard Band"), message);
          });
#else
        MessageBox::warning_message (this, tr ("WSPR Guard Band"), message);
#endif
      }
    }

    if (m_config.watchdog() && !m_mode.startsWith ("WSPR")
        && m_idleMinutes >= m_config.watchdog ()) {
      tx_watchdog (true);       // disable transmit
    }

    float fTR=float((nsec%m_TRperiod))/m_TRperiod;
//    if(g_iptt==0 and ((m_bTxTime and fTR<0.4) or m_tune )) {
    if(g_iptt==0 and ((m_bTxTime and fTR<99) or m_tune )) {   //### Allow late starts
      icw[0]=m_ncw;
      g_iptt = 1;
      setRig ();
      setXIT (ui->TxFreqSpinBox->value ());

      Q_EMIT m_config.transceiver_ptt (true);            //Assert the PTT
      ptt1Timer.start(int(1000.0*m_config.txDelay()));   //Start-of-transmission sequencer delay
    }
    if(!m_bTxTime and !m_tune) m_btxok=false;       //Time to stop transmitting
  }

  if(m_mode.startsWith ("WSPR") and
     ((m_ntr==1 and m_rxDone) or (m_ntr==-1 and m_nseq>tx2))) {
    if(m_monitoring) {
      m_rxDone=false;
    }
    if(m_transmitting) {
      WSPR_history(m_freqNominal,-1);
      m_bTxTime=false;                        //Time to stop a WSPR transmission
      m_btxok=false;
    }
    else if (m_ntr != -1) {
      WSPR_scheduling ();
      m_ntr=0;                                //This WSPR Rx sequence is complete
    }
  }

  // Calculate Tx tones when needed
  if((g_iptt==1 && m_iptt0==0) || m_restart) {
//----------------------------------------------------------------------
    QByteArray ba;

    if(m_mode.startsWith ("WSPR")) {
      QString sdBm,msg0,msg1,msg2;
      sdBm.sprintf(" %d",m_dBm);
      m_tx=1-m_tx;
      int i2=m_config.my_callsign().indexOf("/");
      if(i2>0
         || (6 == m_config.my_grid ().size ()
             && !ui->WSPR_prefer_type_1_check_box->isChecked ())) {
        if(i2<0) {                                                 // "Type 2" WSPR message
          msg1=m_config.my_callsign() + " " + m_config.my_grid().mid(0,4) + sdBm;
        } else {
          msg1=m_config.my_callsign() + sdBm;
        }
        msg0="<" + m_config.my_callsign() + "> " + m_config.my_grid()+ sdBm;
        if(m_tx==0) msg2=msg0;
        if(m_tx==1) msg2=msg1;
      } else {
        msg2=m_config.my_callsign() + " " + m_config.my_grid().mid(0,4) + sdBm; // Normal WSPR message
      }
      ba=msg2.toLatin1();
    } else {
      if(m_ntx == 1) ba=ui->tx1->text().toLocal8Bit();
      if(m_ntx == 2) ba=ui->tx2->text().toLocal8Bit();
      if(m_ntx == 3) ba=ui->tx3->text().toLocal8Bit();
      if(m_ntx == 4) ba=ui->tx4->text().toLocal8Bit();
      if(m_ntx == 5) ba=ui->tx5->currentText().toLocal8Bit();
      if(m_ntx == 6) ba=ui->tx6->text().toLocal8Bit();
      if(m_ntx == 7) ba=ui->genMsg->text().toLocal8Bit();
      if(m_ntx == 8) ba=ui->freeTextMsg->currentText().toLocal8Bit();
    }

    ba2msg(ba,message);
    int ichk=0;
    if (m_lastMessageSent != m_currentMessage
        || m_lastMessageType != m_currentMessageType)
      {
        m_lastMessageSent = m_currentMessage;
        m_lastMessageType = m_currentMessageType;
      }
    m_currentMessageType = 0;
    if(m_tune or m_mode=="Echo") {
      itone[0]=0;
    } else {
      if(m_mode=="ISCAT") {
        int len2=28;
        geniscat_(message, msgsent, const_cast<int *> (itone),len2, len2);
        msgsent[28]=0;
      } else {
        int len1=22;
        if(m_modeTx=="JT4") gen4_(message, &ichk , msgsent, const_cast<int *> (itone),
                                  &m_currentMessageType, len1, len1);
        if(m_modeTx=="JT9") gen9_(message, &ichk, msgsent, const_cast<int *> (itone),
                                  &m_currentMessageType, len1, len1);
        if(m_modeTx=="JT65") gen65_(message, &ichk, msgsent, const_cast<int *> (itone),
                                    &m_currentMessageType, len1, len1);
        if(m_mode=="QRA64") genqra64_(message, &ichk, msgsent, const_cast<int *> (itone),
                                    &m_currentMessageType, len1, len1);
        if(m_mode=="WSPR") genwspr_(message, msgsent, const_cast<int *> (itone),
                                    len1, len1);
        if(m_mode=="WSPR-LF") genwspr_fsk8_(message, msgsent, const_cast<int *> (itone),
                                    len1, len1);
        if(m_mode=="FT8") genft8_(message, msgsent, const_cast<int *> (itone), len1, len1);
        if(m_modeTx=="MSK144") {
          bool bcontest=m_config.contestMode();
          char MyGrid[6];
          strncpy(MyGrid, (m_config.my_grid()+"      ").toLatin1(),6);
          genmsk144_(message, MyGrid, &ichk, &bcontest, msgsent, const_cast<int *> (itone),
              &m_currentMessageType, len1, 6, len1);
          if(m_restart) {
            int nsym=144;
            if(itone[40]==-40) nsym=40;
            m_modulator->set_nsym(nsym);
          }
        }
        msgsent[22]=0;
      }
    }

    m_currentMessage = QString::fromLatin1(msgsent);
    if (m_tune) {
      m_currentMessage = "TUNE";
      m_currentMessageType = -1;
    }
    if(m_restart) {
      QFile f {m_dataDir.absoluteFilePath ("ALL.TXT")};
      if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append))
        {
          QTextStream out(&f);
          out << QDateTime::currentDateTimeUtc().toString("hhmm")
              << "  Transmitting " << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6)
              << " MHz  " << m_modeTx
              << ":  " << m_currentMessage << endl;
          f.close();
        }
      else
        {
          auto const& message = tr ("Cannot open \"%1\" for append: %2")
            .arg (f.fileName ()).arg (f.errorString ());
#if QT_VERSION >= 0x050400
          QTimer::singleShot (0, [=] {                   // don't block guiUpdate
              MessageBox::warning_message (this, tr ("Log File Error"), message);
            });
#else
          MessageBox::warning_message (this, tr ("Log File Error"), message);
#endif
        }
      if (m_config.TX_messages ())
        {
          ui->decodedTextBrowser2->displayTransmittedText(m_currentMessage,m_modeTx,
                     ui->TxFreqSpinBox->value(),m_config.color_TxMsg(),m_bFastMode);
        }
    }

    auto t2 = QDateTime::currentDateTimeUtc ().toString ("hhmm");
    icw[0] = 0;
    auto msg_parts = m_currentMessage.split (' ', QString::SkipEmptyParts);
    auto is_73 = message_is_73 (m_currentMessageType, msg_parts);
    m_sentFirst73 = is_73
      && !message_is_73 (m_lastMessageType, m_lastMessageSent.split (' ', QString::SkipEmptyParts));
    if (m_sentFirst73) {
      m_qsoStop=t2;
//      if(m_config.id_after_73 () and (!m_bFastMode)) {
      if(m_config.id_after_73 ()) {
        icw[0] = m_ncw;
      }
      if (m_config.prompt_to_log () && !m_tune) {
        logQSOTimer.start (0);
      }
    }
    if (is_73 && m_config.disable_TX_on_73 ()) {
      auto_tx_mode (false);
    }

    if(m_config.id_interval () >0) {
      int nmin=(m_sec0-m_secID)/60;
      if(m_sec0<m_secID) nmin=m_config.id_interval();
      if(nmin >= m_config.id_interval()) {
        icw[0]=m_ncw;
        m_secID=m_sec0;
      }
    }

    if (m_currentMessageType < 6 && msg_parts.length() >= 3
        && (msg_parts[1] == m_config.my_callsign () ||
            msg_parts[1] == m_baseCall))
    {
      int i1;
      bool ok;
      i1 = msg_parts[2].toInt(&ok);
      if(ok and i1>=-50 and i1<50)
      {
        m_rptSent = msg_parts[2];
        m_qsoStart = t2;
      } else {
        if (msg_parts[2].mid (0, 1) == "R")
        {
          i1 = msg_parts[2].mid (1).toInt (&ok);
          if (ok and i1 >= -50 and i1 < 50)
          {
            m_rptSent = msg_parts[2].mid (1);
            m_qsoStart = t2;
          }
        }
      }
    }
    m_restart=false;
//----------------------------------------------------------------------
  } else {
    if (!m_auto && m_sentFirst73)
    {
      m_sentFirst73 = false;
      if (1 == ui->tabWidget->currentIndex())
      {
        ui->genMsg->setText(ui->tx6->text());
        m_ntx=7;
        m_gen_message_is_cq = true;
        ui->rbGenMsg->setChecked(true);
      } else {
//JHT 11/29/2015        m_ntx=6;
//        ui->txrb6->setChecked(true);
      }
    }
  }

  if (g_iptt == 1 && m_iptt0 == 0)
    {
      auto const& current_message = QString::fromLatin1 (msgsent);
      if(m_config.watchdog () && !m_mode.startsWith ("WSPR")
         && current_message != m_msgSent0) {
        tx_watchdog (false);  // in case we are auto sequencing
        m_msgSent0 = current_message;
      }

      if(!m_tune) {
        QFile f {m_dataDir.absoluteFilePath ("ALL.TXT")};
        if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
          QTextStream out(&f);
          out << QDateTime::currentDateTimeUtc().toString("hhmm")
              << "  Transmitting " << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6) << " MHz  "
              << m_modeTx
              << ":  " << m_currentMessage << endl;
          f.close();
        } else {
          auto const& message = tr ("Cannot open \"%1\" for append: %2")
            .arg (f.fileName ()).arg(f.errorString ());
#if QT_VERSION >= 0x050400
          QTimer::singleShot (0, [=] { // don't block guiUpdate
              MessageBox::warning_message (this, tr ("Log File Error"), message);
            });
#else
          MessageBox::warning_message (this, tr ("Log File Error"), message);
#endif
        }
      }

      if (m_config.TX_messages () && !m_tune) {
        ui->decodedTextBrowser2->displayTransmittedText(current_message, m_modeTx,
              ui->TxFreqSpinBox->value(),m_config.color_TxMsg(),m_bFastMode);
      }

      m_transmitting = true;
      transmitDisplay (true);
      statusUpdate ();
    }

  if(!m_btxok && m_btxok0 && g_iptt==1) stopTx();

  if(m_startAnother) {
    if(m_mode=="MSK144") {
      m_wait++;
    }
    if(m_mode!="MSK144" or m_wait>=4) {
      m_wait=0;
      m_startAnother=false;
      on_actionOpen_next_in_directory_triggered();
    }
  }

//Once per second:
  if(nsec != m_sec0) {
    if(m_freqNominal!=0 and m_freqNominal<50000000 and m_config.enable_VHF_features()) {
      if(!m_bVHFwarned) vhfWarning();
    } else {
      m_bVHFwarned=false;
    }

    if(m_auto and m_mode=="Echo" and m_bEchoTxOK) {
      progressBar.setMaximum(6);
      progressBar.setValue(int(m_s6));
    }

    if(m_mode!="Echo") {
      if(m_monitoring or m_transmitting) {
        progressBar.setMaximum(m_TRperiod);
        int isec=int(fmod(tsec,m_TRperiod));
        progressBar.setValue(isec);
      } else {
        progressBar.setValue(0);
      }
    }

    astroUpdate ();

    if(m_transmitting) {
      char s[37];
      sprintf(s,"Tx: %s",msgsent);
      m_nsendingsh=0;
      if(s[4]==64) m_nsendingsh=1;
      if(m_nsendingsh==1 or m_currentMessageType==7) {
        tx_status_label.setStyleSheet("QLabel{background-color: #66ffff}");
      } else if(m_nsendingsh==-1 or m_currentMessageType==6) {
        tx_status_label.setStyleSheet("QLabel{background-color: #ffccff}");
      } else {
        tx_status_label.setStyleSheet("QLabel{background-color: #ffff33}");
      }
      if(m_tune) {
        tx_status_label.setText("Tx: TUNE");
      } else {
        if(m_mode=="Echo") {
          tx_status_label.setText("Tx: ECHO");
        } else {
          tx_status_label.setText(s);
        }
      }
    } else if(m_monitoring) {
      if (!m_tx_watchdog) {
        tx_status_label.setStyleSheet("QLabel{background-color: #00ff00}");
        QString t;
        t="Receiving";
//        if(m_mode=="MSK144" and m_config.realTimeDecode()) {
        if(m_mode=="MSK144") {
          int npct=int(100.0*m_fCPUmskrtd/0.298667);
          if(npct>90) tx_status_label.setStyleSheet("QLabel{background-color: #ff0000}");
          t.sprintf("Receiving   %2d%%",npct);
        }
        tx_status_label.setText (t);
      }
      transmitDisplay(false);
    } else if (!m_diskData && !m_tx_watchdog) {
      tx_status_label.setStyleSheet("");
      tx_status_label.setText("");
    }

    QDateTime t = QDateTime::currentDateTimeUtc();
    QString utc = t.date().toString("yyyy MMM dd") + "\n " +
      t.time().toString() + " ";
    ui->labUTC->setText(utc);
    if(!m_monitoring and !m_diskData) {
      ui->signal_meter_widget->setValue(0,0);
    }
    m_sec0=nsec;
    displayDialFrequency ();
  }
  m_iptt0=g_iptt;
  m_btxok0=m_btxok;
}               //End of GUIupdate


void MainWindow::startTx2()
{
  if (!m_modulator->isActive ()) { // TODO - not thread safe
    double fSpread=0.0;
    double snr=99.0;
    QString t=ui->tx5->currentText();
    if(t.mid(0,1)=="#") fSpread=t.mid(1,5).toDouble();
    m_modulator->setSpread(fSpread); // TODO - not thread safe
    t=ui->tx6->text();
    if(t.mid(0,1)=="#") snr=t.mid(1,5).toDouble();
    if(snr>0.0 or snr < -50.0) snr=99.0;
    transmit (snr);
    ui->signal_meter_widget->setValue(0,0);
    if(m_mode=="Echo" and !m_tune) m_bTransmittedEcho=true;

    if(m_mode.startsWith ("WSPR") and !m_tune) {
      if (m_config.TX_messages ()) {
        t = " Transmitting " + m_mode + " ----------------------- " +
          m_config.bands ()->find (m_freqNominal);
        t=WSPR_hhmm(0) + ' ' + t.rightJustified (66, '-');
        ui->decodedTextBrowser->appendText(t);
      }

      QFile f {m_dataDir.absoluteFilePath ("ALL_WSPR.TXT")};
      if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
        QTextStream out(&f);
        out << QDateTime::currentDateTimeUtc().toString("yyMMdd hhmm")
            << "  Transmitting " << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6) << " MHz:  "
            << m_currentMessage << "  " + m_mode << endl;
        f.close();
      } else {
        MessageBox::warning_message (this, tr ("Log File Error"),
                                     tr ("Cannot open \"%1\" for append: %2")
                                     .arg (f.fileName ()).arg (f.errorString ()));
      }
    }
  }
}

void MainWindow::stopTx()
{
  Q_EMIT endTransmitMessage ();
  m_btxok = false;
  m_transmitting = false;
  g_iptt=0;
  if (!m_tx_watchdog) {
    tx_status_label.setStyleSheet("");
    tx_status_label.setText("");
  }
  ptt0Timer.start(200);                       //end-of-transmission sequencer delay
  monitor (true);
  statusUpdate ();
}

void MainWindow::stopTx2()
{
  Q_EMIT m_config.transceiver_ptt (false);      //Lower PTT
  if (m_mode == "JT9" && m_bFast9
      && ui->cbAutoSeq->isVisible () && ui->cbAutoSeq->isChecked()
      && m_ntx == 5 && m_nTx73 >= 5) {
    on_stopTxButton_clicked ();
    m_nTx73 = 0;
  }
  if(m_mode.startsWith ("WSPR") and m_ntr==-1 and !m_tuneup) {
    m_wideGraph->setWSPRtransmitted();
    WSPR_scheduling ();
    m_ntr=0;
  }
  last_tx_label.setText("Last Tx: " + m_currentMessage.trimmed());
}

void MainWindow::ba2msg(QByteArray ba, char message[])             //ba2msg()
{
  int iz=ba.length();
  for(int i=0;i<28; i++) {
    if(i<iz) {
      message[i]=ba[i];
    } else {
      message[i]=32;
    }
  }
  message[28]=0;
}

void MainWindow::on_txFirstCheckBox_stateChanged(int nstate)        //TxFirst
{
  m_txFirst = (nstate==2);
}

void MainWindow::set_dateTimeQSO(int m_ntx)
{
    // m_ntx = -1 resets to default time
    // Our QSO start time can be fairly well determined from Tx 2 and Tx 3 -- the grid reports
    // If we CQ'd and sending sigrpt then 2 minutes ago n=2
    // If we're on msg 3 then 3 minutes ago n=3 -- might have sat on msg1 for a while
    // If we've already set our time on just return.
    // This should mean that Tx2 or Tx3 has been repeated so don't update the start time
    // We reset it in several places
    if (m_ntx == -1) { // we use a default date to detect change
        m_dateTimeQSOOn=m_dateTimeDefault;
    }
    else if (m_dateTimeQSOOn != m_dateTimeDefault) {
        return;
    }
    else { // we also take of m_TRperiod/2 to allow for late clicks
        m_dateTimeQSOOn=QDateTime::currentDateTimeUtc().addSecs((-(m_ntx-1)*m_TRperiod)-m_TRperiod/2);
    }
}

void MainWindow::set_ntx(int n)                                   //set_ntx()
{
  m_ntx=n;
}

void MainWindow::on_txrb1_toggled(bool status)
{
    // if Tx 1 is clicked we won't use it so reset to default
    // We may hang on this message for quite a while trying
    // to get a response perhaps when another QSO is going on
    if (status) set_dateTimeQSO(-1);
}

void MainWindow::on_txrb2_toggled(bool status)
{
  // Tx 2 means we already have CQ'd so good reference
  if (status) set_dateTimeQSO(m_ntx);
}

void MainWindow::on_txrb3_toggled(bool status)
{
  // Tx 3 means we should havel already have done Tx 1 so good reference
  if (status) set_dateTimeQSO(m_ntx);
}

void MainWindow::on_txb1_clicked()                                //txb1
{
  m_ntx=1;
  ui->txrb1->setChecked(true);
  if (m_transmitting) m_restart=true;
}

void MainWindow::on_txb2_clicked()                                //txb2
{
  m_ntx=2;
  ui->txrb2->setChecked(true);
  if (m_transmitting) m_restart=true;
}

void MainWindow::on_txb3_clicked()                                //txb3
{
  m_ntx=3;
  ui->txrb3->setChecked(true);
  if (m_transmitting) m_restart=true;
}

void MainWindow::on_txb4_clicked()                                //txb4
{
  m_ntx=4;
  ui->txrb4->setChecked(true);
  if (m_transmitting) m_restart=true;
}

void MainWindow::on_txb5_clicked()                                //txb5
{
  m_ntx=5;
  ui->txrb5->setChecked(true);
  if (m_transmitting) m_restart=true;
}

void MainWindow::on_txb6_clicked()                                //txb6
{
  m_ntx=6;
  ui->txrb6->setChecked(true);
  if (m_transmitting) m_restart=true;
  if (ui->txrb6->text().contains("CQ")) set_dateTimeQSO(-1);
}

void MainWindow::doubleClickOnCall2(bool shift, bool ctrl)
{
  set_dateTimeQSO(-1); // reset our QSO start time
  m_decodedText2=true;
  doubleClickOnCall(shift,ctrl);
  m_decodedText2=false;
}

void MainWindow::doubleClickOnCall(bool shift, bool ctrl)
{
  QTextCursor cursor;
  QString t;                         //Full contents
  set_dateTimeQSO(-1); // reset our QSO start time
  if(m_mode=="ISCAT") {
    MessageBox::information_message (this,
        "Double-click not presently implemented for ISCAT mode");
  }

  if(shift) t="";                    //Silence compiler warning
  if(m_decodedText2) {
    cursor=ui->decodedTextBrowser->textCursor();
    t= ui->decodedTextBrowser->toPlainText();
  } else {
    cursor=ui->decodedTextBrowser2->textCursor();
    t= ui->decodedTextBrowser2->toPlainText();
  }

  cursor.select(QTextCursor::LineUnderCursor);
  int position {cursor.position()};
  if(shift && position==-9999) return;        //Silence compiler warning

  QString messages;
  if(!m_decodedText2) messages= ui->decodedTextBrowser2->toPlainText();
  if(m_decodedText2) messages= ui->decodedTextBrowser->toPlainText();
  if(ui->cbCQTx->isEnabled () && ui->cbCQTx->isEnabled () && ui->cbCQTx->isChecked())
    {
      m_bDoubleClickAfterCQnnn=true;
    }
  m_bDoubleClicked=true;
  processMessage(messages, position, ctrl);
}

void MainWindow::processMessage(QString const& messages, int position, bool ctrl)
{
  QString t1 = messages.mid(0,position);        //contents up to \n on selected line
  int i1=t1.lastIndexOf(QChar::LineFeed) + 1; //points to first char of line
  DecodedText decodedtext;
  QString t2 = messages.mid(i1,position-i1);    //selected line
  QString t2a;
  int ntsec=3600*t2.mid(0,2).toInt() + 60*t2.mid(2,2).toInt();
  if(m_bFastMode or m_mode=="FT8") {
    ntsec = ntsec + t2.mid(4,2).toInt();
    t2a=t2.mid(0,4) + t2.mid(6,-1);     //Change hhmmss to hhmm for the message parser
  } else {
    t2a=t2.left (44);       // strip and quality info trailing the decoded message
  }
  if(m_bFastMode or m_mode=="FT8") {
    i1=t2a.indexOf(" CQ ");
    if(i1>10) {
      bool ok;
      Frequency kHz {t2a.mid (i1+4,3).toUInt (&ok)};
      if(ok && kHz <= 999) {
        t2a = t2a.mid (0, i1+4) + t2a.mid (i1+8, -1);
        if (m_config.is_transceiver_online ()) {
          //QSY Freq for answering CQ nnn
          setRig (m_freqNominal / 1000000 * 1000000 + 1000 * kHz);
          ui->decodedTextBrowser2->displayQSY (QString {"QSY %1"}.arg (m_freqNominal / 1e6, 7, 'f', 3));
        }
      }
    }
  }
  decodedtext = t2a;

  if (decodedtext.indexOf(" CQ ") > 0) {
// TODO this magic 37 characters is also referenced in DisplayText::_appendDXCCWorkedB4()
    auto eom_pos = decodedtext.string ().indexOf (' ', 36);
    if (eom_pos < 36) eom_pos = decodedtext.string ().size () - 1; // we always want at least the characters
                            // to position 36
    decodedtext = decodedtext.string ().left (eom_pos + 1);  // remove DXCC entity and worked B4 status. TODO need a better way to do this
  }

  auto t3 = decodedtext.string ();
  auto t4 = t3.replace (QRegularExpression {" CQ ([A-Z]{2,2}|[0-9]{3,3}) "}, " CQ_\\1 ").split (" ", QString::SkipEmptyParts);
  if(t4.size () < 6) return;             //Skip the rest if no decoded text

  int frequency = decodedtext.frequencyOffset();
  if (ui->RxFreqSpinBox->isEnabled () and m_mode != "MSK144") {
    ui->RxFreqSpinBox->setValue (frequency);    //Set Rx freq
  }

  if(decodedtext.isTX() and !m_config.enable_VHF_features()) {
    if (ctrl && ui->TxFreqSpinBox->isEnabled()) {
      ui->TxFreqSpinBox->setValue(frequency); //Set Tx freq
    }
    return;
  }

  int nmod=ntsec % (2*m_TRperiod);
  m_txFirst=(nmod!=0);
  ui->txFirstCheckBox->setChecked(m_txFirst);

  QString hiscall;
  QString hisgrid;
  decodedtext.deCallAndGrid(/*out*/hiscall,hisgrid);
  if (!Radio::is_callsign (hiscall)    // not interested if not from QSO partner
      && !(t4.size () == 7             // unless it is of the form
           && (t4.at (5) == m_baseCall // "<our-call> 73"
               || t4.at (5).startsWith (m_baseCall + '/')
               || t4.at (5).endsWith ('/' + m_baseCall))
           && t4.at (6) == "73"))
    {
      qDebug () << "Not processing message - hiscall:" << hiscall << "hisgrid:" << hisgrid;
      return;
    }
  // only allow automatic mode changes between JT9 and JT65, and when not transmitting
  if (!m_transmitting and m_mode == "JT9+JT65") {
    if (decodedtext.isJT9())
      {
        m_modeTx="JT9";
        ui->pbTxMode->setText("Tx JT9  @");
        m_wideGraph->setModeTx(m_modeTx);
      } else if (decodedtext.isJT65()) {
      m_modeTx="JT65";
      ui->pbTxMode->setText("Tx JT65  #");
      m_wideGraph->setModeTx(m_modeTx);
    }
  } else if ((decodedtext.isJT9 () and m_modeTx != "JT9" and m_mode != "JT4") or
             (decodedtext.isJT65 () and m_modeTx != "JT65" and m_mode != "JT4")) {
    // if we are not allowing mode change then don't process decode
    return;
  }


  QString firstcall = decodedtext.call();
  if(!m_bFastMode and (!m_config.enable_VHF_features() or m_mode=="FT8")) {
  // Don't change Tx freq if in a fast mode, or VHF features enabled; also not if a
  // station is calling me, unless m_lockTxFreq is true or CTRL is held down.
    if ((firstcall!=m_config.my_callsign () and firstcall != m_baseCall) or
        m_lockTxFreq or ctrl) {
      if (ui->TxFreqSpinBox->isEnabled ()) {
        if(!m_bFastMode) ui->TxFreqSpinBox->setValue(frequency);
      } else if(m_mode != "JT4" && m_mode != "JT65" && !m_mode.startsWith ("JT9") &&
                m_mode != "QRA64") {
        return;
      }
    }
  }

  int i9=m_QSOText.indexOf(decodedtext.string());
  if (i9<0 and !decodedtext.isTX())
    {
    decodedtext=t2;
      ui->decodedTextBrowser2->displayDecodedText(decodedtext, m_baseCall, false, m_logBook,
              m_config.color_CQ(), m_config.color_MyCall(), m_config.color_DXCC(),
              m_config.color_NewCall());
      m_QSOText=decodedtext;
    }

  // prior DX call (possible QSO partner)
  auto qso_partner_base_call = Radio::base_callsign (ui->dxCallEntry-> text ());

  auto base_call = Radio::base_callsign (hiscall);
  if (base_call != Radio::base_callsign (ui->dxCallEntry-> text ()) || base_call != hiscall)
    {
      if (Radio::base_callsign (ui->dxCallEntry->text ()) != base_call) {
        // clear the DX grid if the base call of his call is different
        // from the current DX call
        ui->dxGridEntry->clear ();
      }
      // his base call different or his call more qualified
      // i.e. compound version of same base call
      ui->dxCallEntry->setText (hiscall);
    }
  if (grid_regexp.exactMatch (hisgrid)) {
    if(ui->dxGridEntry->text().mid(0,4) != hisgrid) ui->dxGridEntry->setText(hisgrid);
  }
  if (!ui->dxGridEntry->text ().size ())
    lookup();
  m_hisGrid = ui->dxGridEntry->text();

  QString rpt = decodedtext.report();
  int n=rpt.toInt();
  if(m_mode=="MSK144" and m_bShMsgs) {
    int n=rpt.toInt();
    if(n<=-2) n=-3;
    if(n>=-1 and n<=1) n=0;
    if(n>=2 and n<=4) n=3;
    if(n>=5 and n<=7) n=6;
    if(n>=8 and n<=11) n=10;
    if(n>=12 and n<=14) n=13;
    if(n>=15) n=16;
    rpt=QString::number(n);
  }

  ui->rptSpinBox->setValue(n);
  if(m_nTx73==0) genStdMsgs(rpt);   //Don't genStdMsgs if we're already sending 73.

// Determine appropriate response to received message
  auto dtext = " " + decodedtext.string () + " ";
  if(dtext.contains (" " + m_baseCall + " ")
     || dtext.contains ("<" + m_baseCall + " ")
     || dtext.contains ("/" + m_baseCall + " ")
     || dtext.contains (" " + m_baseCall + "/")
     || (firstcall == "DE" && ((t4.size () > 7 && t4.at(7) != "73") || t4.size () <= 7)))
    {

      if (t4.size () > 7   // enough fields for a normal msg
          and !grid_regexp.exactMatch  (t4.at (7))) // but no grid on end of msg
        {
          QString r=t4.at (7);
          if(r.mid(0,3)=="RRR" || (r.toInt()==73)) {
            m_ntx=5;
            ui->txrb5->setChecked(true);
            if(ui->tabWidget->currentIndex()==1) {
              ui->genMsg->setText(ui->tx5->currentText());
              m_ntx=7;
              m_gen_message_is_cq = false;
              ui->rbGenMsg->setChecked(true);
            }
          } else if(r.mid(0,1)=="R") {
            m_ntx=4;
            ui->txrb4->setChecked(true);
            if(ui->tabWidget->currentIndex()==1) {
              ui->genMsg->setText(ui->tx4->text());
              m_ntx=7;
              m_gen_message_is_cq = false;
              ui->rbGenMsg->setChecked(true);
            }
          } else if(r.toInt()>=-50 and r.toInt()<=49) {
            m_ntx=3;
            ui->txrb3->setChecked(true);
            if(ui->tabWidget->currentIndex()==1) {
              ui->genMsg->setText(ui->tx3->text());
              m_ntx=7;
              m_gen_message_is_cq = false;
              ui->rbGenMsg->setChecked(true);
            }
          }
        }
      else if (t4.size () == 7 && t4.at (6) == "73") {
        // 73 back to compound call holder
        m_ntx=5;
        ui->txrb5->setChecked(true);
        if(ui->tabWidget->currentIndex()==1) {
          ui->genMsg->setText(ui->tx5->currentText());
          m_ntx=7;
          m_gen_message_is_cq = false;
          ui->rbGenMsg->setChecked(true);
        }
      } else {
        if(m_mode=="MSK144" and m_config.contestMode()) {
          m_ntx=3;
          ui->txrb3->setChecked(true);
        } else {
          m_ntx=2;
          ui->txrb2->setChecked(true);
        }
        if(ui->tabWidget->currentIndex()==1) {
          ui->genMsg->setText(ui->tx2->text());
          m_ntx=7;
          m_gen_message_is_cq = false;
          ui->rbGenMsg->setChecked(true);
        }

        if(m_bDoubleClickAfterCQnnn and m_transmitting) {
          on_stopTxButton_clicked();
          TxAgainTimer.start(1500);
        }
        m_bDoubleClickAfterCQnnn=false;
      }
    }
  else if (firstcall == "DE" && t4.size () == 8 && t4.at (7) == "73") {
    if (base_call == qso_partner_base_call) {
      // 73 back to compound call holder
      m_ntx=5;
      ui->txrb5->setChecked(true);
      if(ui->tabWidget->currentIndex()==1) {
        ui->genMsg->setText(ui->tx5->currentText());
        m_ntx=7;
        m_gen_message_is_cq = false;
        ui->rbGenMsg->setChecked(true);
      }
    }
    else {
      // treat like a CQ/QRZ
      m_ntx=1;
      ui->txrb1->setChecked(true);
      if(ui->tabWidget->currentIndex()==1) {
        ui->genMsg->setText(ui->tx1->text());
        m_ntx=7;
        m_gen_message_is_cq = false;
        ui->rbGenMsg->setChecked(true);
      }
    }
  }
  else // myCall not in msg
    {
      m_ntx=1;
      ui->txrb1->setChecked(true);
      if(ui->tabWidget->currentIndex()==1) {
        ui->genMsg->setText(ui->tx1->text());
        m_ntx=7;
        m_gen_message_is_cq = false;
        ui->rbGenMsg->setChecked(true);
      }
    }
  if(m_transmitting) m_restart=true;
  if (ui->cbAutoSeq->isVisible () && ui->cbAutoSeq->isChecked () && !m_bDoubleClicked) return;
  if(m_config.quick_call()) auto_tx_mode(true);
  m_bDoubleClicked=false;
}

void MainWindow::genCQMsg ()
{
  if(m_config.my_callsign().size () && m_config.my_grid().size ())
    {
      if (ui->cbCQTx->isEnabled () && ui->cbCQTx->isVisible () && ui->cbCQTx->isChecked ())
        {
          msgtype (QString {"CQ %1 %2 %3"}
                      .arg (m_freqNominal / 1000 - m_freqNominal / 1000000 * 1000, 3, 10, QChar {'0'})
                      .arg (m_config.my_callsign())
                      .arg (m_config.my_grid ().left (4)),
                   ui->tx6);
      }
      else
        {
          msgtype (QString {"CQ %1 %2"}.arg (m_config.my_callsign ()).arg (m_config.my_grid ().left (4)), ui->tx6);
        }
      if (m_mode=="JT4") msgtype ("@1000  (TUNE)", ui->tx6);
    }
  else
    {
      ui->tx6->clear ();
    }
}

void MainWindow::genStdMsgs(QString rpt)
{
  genCQMsg ();
  QString hisCall=ui->dxCallEntry->text();
  if(!hisCall.size ()) {
    ui->labAz->clear ();
//    ui->labDist->clear ();
    ui->tx1->clear ();
    ui->tx2->clear ();
    ui->tx3->clear ();
    ui->tx4->clear ();
    ui->tx5->lineEdit ()->clear ();
    ui->genMsg->clear ();
    m_gen_message_is_cq = false;
    return;
  }
  QString hisBase = Radio::base_callsign (hisCall);

  QString t0=hisBase + " " + m_baseCall + " ";
  QString t00=t0;
  QString t {t0 + m_config.my_grid ().left (4)};
  msgtype(t, ui->tx1);
  if(m_config.enable_VHF_features() and  ui->cbShMsgs->isChecked() and m_mode=="JT65") {
    t=t+" OOO";
    msgtype(t, ui->tx2);
    msgtype("RO", ui->tx3);
    msgtype("RRR", ui->tx4);
    msgtype("73", ui->tx5->lineEdit ());
  } else {
    int n=rpt.toInt();
    rpt.sprintf("%+2.2d",n);

    if(m_mode=="MSK144") {
      if(m_config.contestMode()) {
        t=t0 + m_config.my_grid().mid(0,4);
        msgtype(t, ui->tx2);
        t=t0 + "R " + m_config.my_grid().mid(0,4);
        msgtype(t, ui->tx3);
      }
      if(m_bShMsgs) {
        int i=t0.length()-1;
        t0="<" + t0.mid(0,i) + "> ";
        if(!m_config.contestMode()) {
          if(n<=-2) n=-3;
          if(n>=-1 and n<=1) n=0;
          if(n>=2 and n<=4) n=3;
          if(n>=5 and n<=7) n=6;
          if(n>=8 and n<=11) n=10;
          if(n>=12 and n<=14) n=13;
          if(n>=15) n=16;
          rpt.sprintf("%+2.2d",n);
        }
      }
    }
    if(m_mode!="MSK144" or !m_config.contestMode()) {
      t=t00 + rpt;
      msgtype(t, ui->tx2);
      t=t0 + "R" + rpt;
      msgtype(t, ui->tx3);
    }
    t=t0 + "RRR";
    if(m_mode=="JT4" and m_bShMsgs) t="@1500  (RRR)";
    msgtype(t, ui->tx4);
    t=t0 + "73";
    if(m_mode=="JT4" and m_bShMsgs) t="@1750  (73)";
    msgtype(t, ui->tx5->lineEdit ());
  }

  if(m_config.my_callsign () != m_baseCall) {
    if(shortList(m_config.my_callsign ())) {
      t=hisBase + " " + m_config.my_callsign ();
      msgtype(t, ui->tx1);
      t="CQ " + m_config.my_callsign ();
      if(ui->cbCQTx->isEnabled () && ui->cbCQTx->isVisible () && ui->cbCQTx->isChecked()) {
        msgtype (
                 QString {"CQ %1 %2"}
                    .arg (m_freqNominal / 1000 - m_freqNominal / 1000000 * 1000, 3, 10, QChar {'0'})
                    .arg (m_config.my_callsign()),
                 ui->tx6);
      }
      else msgtype(t, ui->tx6);
    } else {
      switch (m_config.type_2_msg_gen ())
        {
        case Configuration::type_2_msg_1_full:
          t="DE " + m_config.my_callsign () + " " + m_config.my_grid ().mid(0,4);
          msgtype(t, ui->tx1);
          t=t0 + "R" + rpt;
          msgtype(t, ui->tx3);
          break;

        case Configuration::type_2_msg_3_full:
          t = t0 + m_config.my_grid ().mid(0,4);
          msgtype(t, ui->tx1);
          t="DE " + m_config.my_callsign () + " R" + rpt;
          msgtype(t, ui->tx3);
          break;

        case Configuration::type_2_msg_5_only:
          t = t0 + m_config.my_grid ().mid(0,4);
          msgtype(t, ui->tx1);
          t=t0 + "R" + rpt;
          msgtype(t, ui->tx3);
          break;
        }
      t="DE " + m_config.my_callsign () + " 73";
      msgtype(t, ui->tx5->lineEdit ());
    }
    if (hisCall != hisBase
        && m_config.type_2_msg_gen () != Configuration::type_2_msg_5_only) {
      // cfm we have his full call copied as we could not do this earlier
      t = hisCall + " 73";
      msgtype(t, ui->tx5->lineEdit ());
    }
  } else {
    if(hisCall!=hisBase) {
      if(shortList(hisCall)) {
        // cfm we know his full call with a type 1 tx1 message
        t=hisCall + " " + m_config.my_callsign ();
        msgtype(t, ui->tx1);
      }
      else {
        t=hisCall + " 73";
        msgtype(t, ui->tx5->lineEdit());
      }
    }
  }
  m_ntx=1;
  ui->txrb1->setChecked(true);
  m_rpt=rpt;
}

void MainWindow::TxAgain()
{
  auto_tx_mode(true);
}

void MainWindow::clearDX ()
{
  ui->dxCallEntry->clear ();
  ui->dxGridEntry->clear ();
  m_rptSent.clear ();
  m_rptRcvd.clear ();
  m_qsoStart.clear ();
  m_qsoStop.clear ();
  genStdMsgs (QString {});
  if (1 == ui->tabWidget->currentIndex())
    {
      ui->genMsg->setText(ui->tx6->text());
      m_ntx=7;
      m_gen_message_is_cq = true;
      ui->rbGenMsg->setChecked(true);
    }
  else
    {
      m_ntx=6;
      ui->txrb6->setChecked(true);
    }
}

void MainWindow::lookup()                                       //lookup()
{
  QString hisCall {ui->dxCallEntry->text()};
  if (!hisCall.size ()) return;
  QFile f {m_dataDir.absoluteFilePath ("CALL3.TXT")};
  if (f.open (QIODevice::ReadOnly | QIODevice::Text))
    {
      char c[132];
      qint64 n=0;
      for(int i=0; i<999999; i++) {
        n=f.readLine(c,sizeof(c));
        if(n <= 0) {
          ui->dxGridEntry->clear ();
          break;
        }
        QString t=QString(c);
        if(t.indexOf(hisCall)==0) {
          int i1=t.indexOf(",");
          QString hisgrid=t.mid(i1+1,6);
          i1=hisgrid.indexOf(",");
          if(i1>0) {
            hisgrid=hisgrid.mid(0,4);
          } else {
            hisgrid=hisgrid.mid(0,4) + hisgrid.mid(4,2).toLower();
          }
          ui->dxGridEntry->setText(hisgrid);
          break;
        }
      }
      f.close();
    }
}

void MainWindow::on_lookupButton_clicked()                    //Lookup button
{
  lookup();
}

void MainWindow::on_addButton_clicked()                       //Add button
{
  if(!ui->dxGridEntry->text ().size ()) {
    MessageBox::warning_message (this, tr ("Add to CALL3.TXT")
                                 , tr ("Please enter a valid grid locator"));
    return;
  }
  m_call3Modified=false;
  QString hisCall=ui->dxCallEntry->text();
  QString hisgrid=ui->dxGridEntry->text();
  QString newEntry=hisCall + "," + hisgrid;

  //  int ret = MessageBox::query_message(this, tr ("Add to CALL3.TXT"),
  //       tr ("Is %1 known to be active on EME?").arg (newEntry));
  //  if(ret==MessageBox::Yes) {
  //    newEntry += ",EME,,";
  //  } else {
  newEntry += ",,,";
  //  }
  
  QFile f1 {m_dataDir.absoluteFilePath ("CALL3.TXT")};
  if(!f1.open(QIODevice::ReadWrite | QIODevice::Text)) {
    MessageBox::warning_message (this, tr ("Add to CALL3.TXT")
                                 , tr ("Cannot open \"%1\" for read/write: %2")
                                 .arg (f1.fileName ()).arg (f1.errorString ()));
    return;
  }
  if(f1.size()==0) {
    QTextStream out(&f1);
    out << "ZZZZZZ" << endl;
    f1.close();
    f1.open(QIODevice::ReadOnly | QIODevice::Text);
  }
  QFile f2 {m_dataDir.absoluteFilePath ("CALL3.TMP")};
  if(!f2.open(QIODevice::WriteOnly | QIODevice::Text)) {
    MessageBox::warning_message (this, tr ("Add to CALL3.TXT")
                                 , tr ("Cannot open \"%1\" for writing: %2")
                                 .arg (f2.fileName ()).arg (f2.errorString ()));
    return;
  }
  QTextStream in(&f1);          //Read from CALL3.TXT
  QTextStream out(&f2);         //Copy into CALL3.TMP
  QString hc=hisCall;
  QString hc1="";
  QString hc2="000000";
  QString s;
  do {
    s=in.readLine();
    hc1=hc2;
    if(s.mid(0,2)=="//") {
      out << s + QChar::LineFeed; //Copy all comment lines
    } else {
      int i1=s.indexOf(",");
      hc2=s.mid(0,i1);
      if(hc>hc1 && hc<hc2) {
        out << newEntry + QChar::LineFeed;
        out << s + QChar::LineFeed;
        m_call3Modified=true;
      } else if(hc==hc2) {
        QString t {tr ("%1\nis already in CALL3.TXT"
                       ", do you wish to replace it?").arg (s)};
        int ret = MessageBox::query_message (this, tr ("Add to CALL3.TXT"), t);
        if(ret==MessageBox::Yes) {
          out << newEntry + QChar::LineFeed;
          m_call3Modified=true;
        }
      } else {
        if(s!="") out << s + QChar::LineFeed;
      }
    }
  } while(!s.isNull());

  f1.close();
  if(hc>hc1 && !m_call3Modified) out << newEntry + QChar::LineFeed;
  if(m_call3Modified) {
    QFile f0 {m_dataDir.absoluteFilePath ("CALL3.OLD")};
    if(f0.exists()) f0.remove();
    QFile f1 {m_dataDir.absoluteFilePath ("CALL3.TXT")};
    f1.rename(m_dataDir.absoluteFilePath ("CALL3.OLD"));
    f2.rename(m_dataDir.absoluteFilePath ("CALL3.TXT"));
    f2.close();
  }
}

void MainWindow::msgtype(QString t, QLineEdit* tx)               //msgtype()
{
  char message[29];
  char msgsent[29];
  int itone0[NUM_ISCAT_SYMBOLS];	//Dummy array, data not used
  int len1=22;
  QByteArray s=t.toUpper().toLocal8Bit();
  ba2msg(s,message);
  int ichk=1,itype=0;
  gen65_(message,&ichk,msgsent,itone0,&itype,len1,len1);
  msgsent[22]=0;
  bool text=false;
  bool shortMsg=false;
  if(itype==6) text=true;
  if(itype==7 and m_config.enable_VHF_features() and
     m_mode=="JT65") shortMsg=true;
  if(m_mode=="MSK144" and t.mid(0,1)=="<") text=false;
  if(m_mode=="MSK144" and m_config.contestMode()) {
    int i0=t.trimmed().length()-7;
    if(t.mid(i0,3)==" R ") text=false;
  }
  QPalette p(tx->palette());
  if(text) {
    p.setColor(QPalette::Base,"#ffccff");
  } else {
    if(shortMsg) {
      p.setColor(QPalette::Base,"#66ffff");
    } else {
      p.setColor(QPalette::Base,Qt::white);
      if(m_mode=="MSK144" and t.mid(0,1)=="<") {
        p.setColor(QPalette::Base,"#00ffff");
      }
    }
  }
  tx->setPalette(p);
  auto pos  = tx->cursorPosition ();
  tx->setText(t.toUpper());
  tx->setCursorPosition (pos);
}

void MainWindow::on_tx1_editingFinished()                       //tx1 edited
{
  QString t=ui->tx1->text();
  msgtype(t, ui->tx1);
}

void MainWindow::on_tx2_editingFinished()                       //tx2 edited
{
  QString t=ui->tx2->text();
  msgtype(t, ui->tx2);
}

void MainWindow::on_tx3_editingFinished()                       //tx3 edited
{
  QString t=ui->tx3->text();
  msgtype(t, ui->tx3);
}

void MainWindow::on_tx4_editingFinished()                       //tx4 edited
{
  QString t=ui->tx4->text();
  msgtype(t, ui->tx4);
}

void MainWindow::on_tx5_currentTextChanged (QString const& text) //tx5 edited
{
  msgtype(text, ui->tx5->lineEdit ());
}

void MainWindow::on_tx6_editingFinished()                       //tx6 edited
{
  QString t=ui->tx6->text();
  msgtype(t, ui->tx6);
}

void MainWindow::on_dxCallEntry_textChanged (QString const& call)
{
  m_hisCall = call;
  statusChanged();
  statusUpdate ();
}

void MainWindow::on_dxCallEntry_returnPressed ()
{
  on_lookupButton_clicked();
}

void MainWindow::on_dxGridEntry_textChanged (QString const& grid)
{
  if (ui->dxGridEntry->hasAcceptableInput ()) {
    if (grid != m_hisGrid) {
      m_hisGrid = grid;
      statusUpdate ();
    }
    qint64 nsec = (QDateTime::currentMSecsSinceEpoch()/1000) % 86400;
    double utch=nsec/3600.0;
    int nAz,nEl,nDmiles,nDkm,nHotAz,nHotABetter;
    azdist_(const_cast <char *> ((m_config.my_grid () + "      ").left (6).toLatin1().constData()),
            const_cast <char *> ((m_hisGrid + "      ").left (6).toLatin1().constData()),&utch,
            &nAz,&nEl,&nDmiles,&nDkm,&nHotAz,&nHotABetter,6,6);
    QString t;
    int nd=nDkm;
    if(m_config.miles()) nd=nDmiles;
    if(m_mode=="MSK144") {
      if(nHotABetter==0)t.sprintf("Az: %d   B: %d   El: %d   %d",nAz,nHotAz,nEl,nd);
      if(nHotABetter!=0)t.sprintf("Az: %d   A: %d   El: %d   %d",nAz,nHotAz,nEl,nd);
    } else {
      t.sprintf("Az: %d        %d",nAz,nd);
    }
    if(m_config.miles()) t += " mi";
    if(!m_config.miles()) t += " km";
    ui->labAz->setText (t);
  } else {
    if (m_hisGrid.size ()) {
      m_hisGrid.clear ();
      ui->labAz->clear ();
      statusUpdate ();
    }
  }
}

void MainWindow::on_genStdMsgsPushButton_clicked()         //genStdMsgs button
{
  genStdMsgs(m_rpt);
}

void MainWindow::on_logQSOButton_clicked()                 //Log QSO button
{
  if (!m_hisCall.size ()) return;
  // m_dateTimeQSOOn should really already be set but we'll ensure it gets set to something just in case
  if (m_dateTimeQSOOn==m_dateTimeDefault)
      m_dateTimeQSOOn=QDateTime::currentDateTimeUtc();
  m_dateTimeQSOOff = QDateTime::currentDateTimeUtc();
  if(m_dateTimeQSOOff < m_dateTimeQSOOn) m_dateTimeQSOOff=m_dateTimeQSOOn;
  m_logDlg->initLogQSO (m_hisCall, m_hisGrid, m_modeTx, m_rptSent, m_rptRcvd,
                        m_dateTimeQSOOn, m_dateTimeQSOOff, m_freqNominal + ui->TxFreqSpinBox->value(),
                        m_config.my_callsign(), m_config.my_grid(), m_noSuffix,
                        m_config.log_as_RTTY(), m_config.report_in_comments());
  m_dateTimeQSOOn = m_dateTimeDefault;
}

void MainWindow::acceptQSO2(QDateTime const& QSO_date_off, QString const& call, QString const& grid
                            , Frequency dial_freq, QString const& mode
                            , QString const& rpt_sent, QString const& rpt_received
                            , QString const& tx_power, QString const& comments
                            , QString const& name, QDateTime const& QSO_date_on)
{
  QString date = m_dateTimeQSOOn.toString("yyyyMMdd");
  m_logBook.addAsWorked (m_hisCall, m_config.bands ()->find (m_freqNominal), m_modeTx, date);

  m_messageClient->qso_logged (QSO_date_off, call, grid, dial_freq, mode, rpt_sent, rpt_received, tx_power, comments, name, QSO_date_on);

  if (m_config.clear_DX ())
    {
      clearDX ();
    }
}

int MainWindow::nWidgets(QString t)
{
  Q_ASSERT(t.length()==N_WIDGETS);
  int n=0;
  for(int i=0; i<N_WIDGETS; i++) {
    n=n + n + t.mid(i,1).toInt();
  }
  return n;
}

void MainWindow::displayWidgets(int n)
{
  int j=1<<(N_WIDGETS-1);
  bool b;
  for(int i=0; i<N_WIDGETS; i++) {
    b=(n&j) != 0;
    if(i==0) ui->txFirstCheckBox->setVisible(b);
    if(i==1) ui->TxFreqSpinBox->setVisible(b);
    if(i==2) ui->RxFreqSpinBox->setVisible(b);
    if(i==3) ui->sbFtol->setVisible(b);
    if(i==4) ui->rptSpinBox->setVisible(b);
    if(i==5) ui->sbTR->setVisible(b);
    if(i==6) {
      ui->sbCQTxFreq->setVisible(b);
      ui->cbCQTx->setVisible(b);
      ui->cbCQTx->setEnabled(b);
    }
    if(i==7) ui->cbShMsgs->setVisible(b);
    if(i==8) ui->cbFast9->setVisible(b);
    if(i==9) ui->cbAutoSeq->setVisible(b);
    if(i==10) ui->cbTx6->setVisible(b);
    if(i==11) ui->pbTxMode->setVisible(b);
    if(i==12) ui->pbR2T->setVisible(b);
    if(i==13) ui->pbT2R->setVisible(b);
    if(i==14) ui->cbTxLock->setVisible(b);
    if(i==14 and (!b)) ui->cbTxLock->setChecked(false);
    if(i==15) ui->sbSubmode->setVisible(b);
    if(i==16) ui->syncSpinBox->setVisible(b);
    if(i==17) ui->WSPR_controls_widget->setVisible(b);
    if(i==18) ui->ClrAvgButton->setVisible(b);
    if(i==19) ui->actionQuickDecode->setEnabled(b);
    if(i==19) ui->actionMediumDecode->setEnabled(b);
    if(i==19) ui->actionDeepestDecode->setEnabled(b);
    if(i==20) ui->actionInclude_averaging->setEnabled(b);
    if(i==21) ui->actionInclude_correlation->setEnabled(b);
    if(i==22) {
      if(b && !m_echoGraph->isVisible()) {
        m_echoGraph->show();
      } else {
        if(m_echoGraph->isVisible()) m_echoGraph->hide();
      }
    }
    if(i==23) {
      ui->cbSWL->setVisible(b);
    }
    j=j>>1;
  }
}

void MainWindow::on_actionFT8_triggered()
{
  m_mode="FT8";
  bool bVHF=false;
  displayWidgets(nWidgets("111010000000111000010000"));
  m_bFast9=false;
  m_bFastMode=false;
  WSPR_config(false);
  switch_mode (Modes::FT8);
  m_modeTx="FT8";
  m_nsps=6912;
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=48;
  setup_status_bar (bVHF);
  m_toneSpacing=0.0;                   //???
  ui->actionFT8->setChecked(true);     //???
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  VHF_features_enabled(bVHF);
  ui->cbAutoSeq->setVisible(true);
  ui->cbAutoSeq->setChecked(true);
  m_TRperiod=15;
  m_fastGraph->hide();
  m_wideGraph->show();
  ui->decodedTextLabel->setText( "  UTC   dB   DT Freq   Message");
  ui->decodedTextLabel2->setText("  UTC   dB   DT Freq   Message");
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  ui->label_6->setText("Band Activity");
  ui->label_7->setText("Rx Frequency");
  statusChanged();
}

void MainWindow::on_actionJT4_triggered()
{
  m_mode="JT4";
  bool bVHF=m_config.enable_VHF_features();
  if(bVHF) {
    displayWidgets(nWidgets("111110010010110110110000"));
  } else {
    displayWidgets(nWidgets("111010000000111000111100"));
  }
  WSPR_config(false);
  switch_mode (Modes::JT4);
  m_modeTx="JT4";
  m_TRperiod=60;
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_nsps=6912;                   //For symspec only
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=176;
  if(m_config.decode_at_52s()) m_hsymStop=184;
  m_toneSpacing=0.0;
  ui->actionJT4->setChecked(true);
  VHF_features_enabled(true);
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  m_bFastMode=false;
  m_bFast9=false;
  setup_status_bar (bVHF);
  fast_config(false);
  ui->sbSubmode->setMaximum(6);
  ui->label_6->setText("Single-Period Decodes");
  ui->label_7->setText("Average Decodes");
  ui->decodedTextLabel->setText("UTC   dB   DT Freq    Message");
  ui->decodedTextLabel2->setText("UTC   dB   DT Freq    Message");
  if(bVHF) {
    ui->sbSubmode->setValue(m_nSubMode);
  } else {
    ui->sbSubmode->setValue(0);
  }
  statusChanged();
}

void MainWindow::on_actionJT9_triggered()
{
  m_mode="JT9";
  bool bVHF=m_config.enable_VHF_features();
  if(bVHF) {
    displayWidgets(nWidgets("111110101100111110010000"));
  } else {
    displayWidgets(nWidgets("111010000000111000010000"));
  }
  m_bFast9=ui->cbFast9->isChecked();
  m_bFastMode=m_bFast9;
  WSPR_config(false);
  switch_mode (Modes::JT9);
  if(m_modeTx!="JT9") on_pbTxMode_clicked();
  m_nsps=6912;
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=173;
  if(m_config.decode_at_52s()) m_hsymStop=179;
  setup_status_bar (bVHF);
  m_toneSpacing=0.0;
  ui->actionJT9->setChecked(true);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  VHF_features_enabled(bVHF);
  if(m_nSubMode>=4 and bVHF) {
    ui->cbFast9->setEnabled(true);
  } else {
    ui->cbFast9->setEnabled(false);
    ui->cbFast9->setChecked(false);
  }
  ui->cbAutoSeq->setVisible(m_bFast9);
  ui->sbSubmode->setMaximum(7);
  fast_config(m_bFastMode);
  if(m_bFast9) {
    m_TRperiod = ui->sbTR->value ();
    m_wideGraph->hide();
    m_fastGraph->show();
    ui->TxFreqSpinBox->setValue(700);
    ui->RxFreqSpinBox->setValue(700);
    ui->decodedTextLabel->setText("UTC     dB    T Freq    Message");
    ui->decodedTextLabel2->setText("UTC     dB    T Freq    Message");
  } else {
    ui->cbAutoSeq->setChecked(false);
    m_TRperiod=60;
    ui->decodedTextLabel->setText("UTC   dB   DT Freq    Message");
    ui->decodedTextLabel2->setText("UTC   dB   DT Freq    Message");
  }
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  ui->label_6->setText("Band Activity");
  ui->label_7->setText("Rx Frequency");
  statusChanged();
}

void MainWindow::on_actionJT9_JT65_triggered()
{
  m_mode="JT9+JT65";
  displayWidgets(nWidgets("111010000001111000010000"));
  WSPR_config(false);
  switch_mode (Modes::JT65);
  if(m_modeTx != "JT65") {
    ui->pbTxMode->setText("Tx JT9  @");
    m_modeTx="JT9";
  }
  m_nSubMode=0;                    //Dual-mode always means JT9 and JT65A
  m_TRperiod=60;
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_nsps=6912;
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=174;
  if(m_config.decode_at_52s()) m_hsymStop=183;
  m_toneSpacing=0.0;
  setup_status_bar (false);
  ui->actionJT9_JT65->setChecked(true);
  VHF_features_enabled(false);
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  m_bFastMode=false;
  m_bFast9=false;
  fast_config(false);
  ui->sbSubmode->setValue(0);
  ui->label_6->setText("Band Activity");
  ui->label_7->setText("Rx Frequency");
  ui->decodedTextLabel->setText("UTC   dB   DT Freq    Message");
  ui->decodedTextLabel2->setText("UTC   dB   DT Freq    Message");
  statusChanged();
}

void MainWindow::on_actionJT65_triggered()
{
  if(m_mode=="JT4" or m_mode.startsWith ("WSPR")) {
// If coming from JT4 or WSPR mode, pretend temporarily that we're coming
// from JT9 and click the pbTxMode button
    m_modeTx="JT9";
    on_pbTxMode_clicked();
  }
  on_actionJT9_triggered();
  m_mode="JT65";
  bool bVHF=m_config.enable_VHF_features();
  if(bVHF) {
    displayWidgets(nWidgets("111110010000111110110000"));
  } else {
    displayWidgets(nWidgets("111010000000111000011100"));
  }
  WSPR_config(false);
  switch_mode (Modes::JT65);
  if(m_modeTx!="JT65") on_pbTxMode_clicked();
  m_TRperiod=60;
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);   // TODO - not thread safe
  m_nsps=6912;                   //For symspec only
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=174;
  if(m_config.decode_at_52s()) m_hsymStop=183;
  m_toneSpacing=0.0;
  ui->actionJT65->setChecked(true);
  VHF_features_enabled(true);
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  setup_status_bar (bVHF);
  m_bFastMode=false;
  m_bFast9=false;
  fast_config(false);
  ui->sbSubmode->setMaximum(2);
  if(bVHF) {
    ui->sbSubmode->setValue(m_nSubMode);
    ui->label_6->setText("Single-Period Decodes");
    ui->label_7->setText("Average Decodes");
  } else {
    ui->sbSubmode->setValue(0);
    ui->label_6->setText("Band Activity");
    ui->label_7->setText("Rx Frequency");
  }
  statusChanged();
}

void MainWindow::on_actionQRA64_triggered()
{
  int n=m_nSubMode;
  on_actionJT65_triggered();
  m_nSubMode=n;
  m_mode="QRA64";
  displayWidgets(nWidgets("111110000000111110000000"));
  m_modeTx="QRA64";
  ui->actionQRA64->setChecked(true);
  switch_mode (Modes::QRA64);
  statusChanged();
  setup_status_bar (true);
  m_hsymStop=180;
  if(m_config.decode_at_52s()) m_hsymStop=188;
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  ui->sbSubmode->setMaximum(4);
  ui->sbSubmode->setValue(m_nSubMode);
  ui->actionInclude_averaging->setEnabled(false);
  ui->actionInclude_correlation->setEnabled(false);
  QString fname {QDir::toNativeSeparators(m_config.temp_dir ().absoluteFilePath ("red.dat"))};
  m_wideGraph->setRedFile(fname);
  QFile f(m_appDir + "/old_qra_sync");
  if(f.exists() and !m_bQRAsyncWarned) {
    MessageBox::warning_message (this, tr ("***  WARNING  *** "),
       "Using old QRA64 sync pattern.");
    m_bQRAsyncWarned=true;
  }
}

void MainWindow::on_actionISCAT_triggered()
{
  m_mode="ISCAT";
  displayWidgets(nWidgets("100111000000000110000000"));
  m_modeTx="ISCAT";
  ui->actionISCAT->setChecked(true);
  m_TRperiod = ui->sbTR->value ();
  m_modulator->setPeriod(m_TRperiod);
  m_detector->setPeriod(m_TRperiod);
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_nsps=6912;                   //For symspec only
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=103;
  m_toneSpacing=11025.0/256.0;
  WSPR_config(false);
  switch_mode(Modes::ISCAT);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  statusChanged();
  if(!m_fastGraph->isVisible()) m_fastGraph->show();
  if(m_wideGraph->isVisible()) m_wideGraph->hide();
  setup_status_bar (true);
  fast_config(true);
  ui->cbShMsgs->setChecked(false);
  ui->label_7->setText("");
  ui->decodedTextBrowser2->setVisible(false);
  ui->decodedTextLabel2->setVisible(false);
  ui->decodedTextLabel->setText(
        "  UTC  Sync dB   DT   DF  F1                                   M  N  C   T ");
  ui->tabWidget->setCurrentIndex(0);
  ui->sbSubmode->setMaximum(1);
  if(m_nSubMode==0) ui->TxFreqSpinBox->setValue(1012);
  if(m_nSubMode==1) ui->TxFreqSpinBox->setValue(560);
  statusChanged ();
}

void MainWindow::on_actionMSK144_triggered()
{
  displayWidgets(nWidgets("101111110100000000010001"));
//    displayWidgets(nWidgets("101111111100000000010001"));
  m_mode="MSK144";
  m_modeTx="MSK144";
  ui->actionMSK144->setChecked(true);
  switch_mode (Modes::MSK144);
  m_nsps=6;
  m_FFTSize = 7 * 512;
  Q_EMIT FFTSize (m_FFTSize);
  setup_status_bar (true);
  m_toneSpacing=0.0;
  WSPR_config(false);
  VHF_features_enabled(true);
  m_bFastMode=true;
  m_bFast9=false;
  fast_config(m_bFastMode);
  m_TRperiod = ui->sbTR->value ();
  m_wideGraph->hide();
  m_fastGraph->show();
  ui->TxFreqSpinBox->setValue(1500);
  ui->RxFreqSpinBox->setValue(1500);
  ui->RxFreqSpinBox->setMinimum(1400);
  ui->RxFreqSpinBox->setMaximum(1600);
  ui->RxFreqSpinBox->setSingleStep(10);
  ui->decodedTextLabel->setText("UTC     dB    T Freq    Message");
  ui->decodedTextLabel2->setText("UTC     dB    T Freq    Message");
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  ui->label_6->setText("Band Activity");
  ui->label_7->setText("Tx Messages");
  ui->actionMSK144->setChecked(true);
  ui->rptSpinBox->setMinimum(-8);
  ui->rptSpinBox->setMaximum(24);
  ui->rptSpinBox->setValue(0);
  ui->rptSpinBox->setSingleStep(1);
  ui->sbFtol->values ({20, 50, 100, 200});
  statusChanged();
}

void MainWindow::on_actionWSPR_triggered()
{
  m_mode="WSPR";
  displayWidgets(nWidgets("000000000000000001010000"));
  WSPR_config(true);
  switch_mode (Modes::WSPR);
  m_modeTx="WSPR";                                    //### not needed ?? ###
  m_TRperiod=120;
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_nsps=6912;                   //For symspec only
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=396;
  m_toneSpacing=12000.0/8192.0;
  setup_status_bar (false);
  ui->actionWSPR->setChecked(true);
  VHF_features_enabled(false);
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  m_bFastMode=false;
  m_bFast9=false;
  fast_config(false);
  ui->TxFreqSpinBox->setValue(ui->WSPRfreqSpinBox->value());
  statusChanged();
}

void MainWindow::on_actionWSPR_LF_triggered()
{
  on_actionWSPR_triggered();
  m_mode="WSPR-LF";
  switch_mode (Modes::WSPR);
  m_modeTx="WSPR-LF";
  m_TRperiod=240;
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_hsymStop=813;
  m_toneSpacing=12000.0/24576.0;
  setup_status_bar (false);
  ui->actionWSPR_LF->setChecked(true);
   m_wideGraph->setPeriod(m_TRperiod,m_nsps);
   statusChanged();
}

void MainWindow::on_actionEcho_triggered()
{
  on_actionJT4_triggered();
  m_mode="Echo";
  displayWidgets(nWidgets("000000000000000000000010"));
  ui->actionEcho->setChecked(true);
  m_TRperiod=3;
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_nsps=6912;                        //For symspec only
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=10;
  m_toneSpacing=1.0;
  switch_mode(Modes::Echo);
  m_modeTx="Echo";
  setup_status_bar (true);
  m_wideGraph->setMode(m_mode);
  m_wideGraph->setModeTx(m_modeTx);
  ui->TxFreqSpinBox->setValue(1500);
  ui->TxFreqSpinBox->setEnabled (false);
  if(!m_echoGraph->isVisible()) m_echoGraph->show();
  if (!ui->actionAstronomical_data->isChecked ()) {
    ui->actionAstronomical_data->setChecked (true);
  }
  m_bFastMode=false;
  m_bFast9=false;
  fast_config(false);
  WSPR_config(true);
  ui->decodedTextLabel->setText("   UTC      N   Level    Sig      DF    Width   Q");
  statusChanged();
}

void MainWindow::on_actionFreqCal_triggered()
{
  on_actionJT9_triggered();
  displayWidgets(nWidgets("001101000000000000000000"));
  m_mode="FreqCal";
  ui->actionFreqCal->setChecked(true);
  switch_mode(Modes::FreqCal);
  m_wideGraph->setMode(m_mode);
  statusChanged();
  m_TRperiod = ui->sbTR->value ();
  m_modulator->setPeriod(m_TRperiod); // TODO - not thread safe
  m_detector->setPeriod(m_TRperiod);  // TODO - not thread safe
  m_nsps=6912;                        //For symspec only
  m_FFTSize = m_nsps / 2;
  Q_EMIT FFTSize (m_FFTSize);
  m_hsymStop=((int(m_TRperiod/0.288))/8)*8;
  m_frequency_list_fcal_iter = m_config.frequencies ()->begin ();
  ui->RxFreqSpinBox->setValue(1500);
  setup_status_bar (true);
//                               18:15:47      0  1  1500  1550.349     0.100    3.5   10.2
  ui->decodedTextLabel->setText("  UTC      Freq CAL Offset  fMeas       DF     Level   S/N");
}

void MainWindow::switch_mode (Mode mode)
{
  m_fastGraph->setMode(m_mode);
  m_config.frequencies ()->filter (mode);
  auto const& row = m_config.frequencies ()->best_working_frequency (m_freqNominal);
  if (row >= 0) {
    ui->bandComboBox->setCurrentIndex (row);
    on_bandComboBox_activated (row);
  }
  ui->rptSpinBox->setSingleStep(1);
  ui->rptSpinBox->setMinimum(-50);
  ui->rptSpinBox->setMaximum(49);
  ui->sbFtol->values ({10, 20, 50, 100, 200, 500, 1000});
  if(m_mode=="MSK144") {
    ui->RxFreqSpinBox->setMinimum(1400);
    ui->RxFreqSpinBox->setMaximum(1600);
    ui->RxFreqSpinBox->setSingleStep(25);
  } else {
    ui->RxFreqSpinBox->setMinimum(200);
    ui->RxFreqSpinBox->setMaximum(5000);
    ui->RxFreqSpinBox->setSingleStep(1);
  }
  m_bVHFwarned=false;
  bool b=m_mode=="FreqCal";
  ui->tabWidget->setVisible(!b);
  if(b) {
    ui->DX_controls_widget->setVisible(false);
    ui->decodedTextBrowser2->setVisible(false);
    ui->decodedTextLabel2->setVisible(false);
    ui->label_6->setVisible(false);
    ui->label_7->setVisible(false);
  }
}

void MainWindow::WSPR_config(bool b)
{
  ui->decodedTextBrowser2->setVisible(!b);
  ui->decodedTextLabel2->setVisible(!b);
  ui->controls_stack_widget->setCurrentIndex (b && m_mode != "Echo" ? 1 : 0);
  ui->QSO_controls_widget->setVisible (!b);
  ui->DX_controls_widget->setVisible (!b);
  ui->WSPR_controls_widget->setVisible (b);
  ui->label_6->setVisible(!b);
  ui->label_7->setVisible(!b);
  ui->logQSOButton->setVisible(!b);
  ui->DecodeButton->setEnabled(!b);
  if(b and (m_mode!="Echo")) {
    QString t="UTC    dB   DT     Freq     Drift  Call          Grid    dBm    ";
    if(m_config.miles()) t += " mi";
    if(!m_config.miles()) t += " km";
    ui->decodedTextLabel->setText(t);
    if (m_config.is_transceiver_online ()) {
      Q_EMIT m_config.transceiver_tx_frequency (0); // turn off split
    }
    m_bSimplex = true;
  } else {
    ui->decodedTextLabel->setText("UTC   dB   DT Freq    Message");
    m_bSimplex = false;
  }
  enable_DXCC_entity (m_config.DXCC ());  // sets text window proportions and (re)inits the logbook
}

void MainWindow::fast_config(bool b)
{
  m_bFastMode=b;
  ui->TxFreqSpinBox->setEnabled(!b);
//  ui->sbTR->setVisible(b);
  if(b and (m_bFast9 or m_mode=="MSK144" or m_mode=="ISCAT")) {
    m_wideGraph->hide();
    m_fastGraph->show();
  } else {
    m_wideGraph->show();
    m_fastGraph->hide();
  }
}

void MainWindow::on_TxFreqSpinBox_valueChanged(int n)
{
  m_wideGraph->setTxFreq(n);
  if(m_lockTxFreq) ui->RxFreqSpinBox->setValue(n);
  if(m_mode!="MSK144") {
    Q_EMIT transmitFrequency (n - m_XIT);
  }
  statusUpdate ();
}

void MainWindow::on_RxFreqSpinBox_valueChanged(int n)
{
  m_wideGraph->setRxFreq(n);
  if (m_mode == "FreqCal"
      && m_frequency_list_fcal_iter != m_config.frequencies ()->end ())
    {
      setRig (m_frequency_list_fcal_iter->frequency_ - n);
    }
  if (m_lockTxFreq && ui->TxFreqSpinBox->isEnabled ())
    {
      ui->TxFreqSpinBox->setValue (n);
    }
  else
    {
      statusUpdate ();
    }
}

void MainWindow::on_actionQuickDecode_toggled (bool checked)
{
  m_ndepth ^= (-checked ^ m_ndepth) & 0x00000001;
}

void MainWindow::on_actionMediumDecode_toggled (bool checked)
{
  m_ndepth ^= (-checked ^ m_ndepth) & 0x00000002;
}

void MainWindow::on_actionDeepestDecode_toggled (bool checked)
{
  m_ndepth ^= (-checked ^ m_ndepth) & 0x00000003;
}

void MainWindow::on_actionInclude_averaging_toggled (bool checked)
{
  m_ndepth ^= (-checked ^ m_ndepth) & 0x00000010;
}

void MainWindow::on_actionInclude_correlation_toggled (bool checked)
{
  m_ndepth ^= (-checked ^ m_ndepth) & 0x00000020;
}

void MainWindow::on_actionEnable_AP_DXcall_toggled (bool checked)
{
  m_ndepth ^= (-checked ^ m_ndepth) & 0x00000040;
}

void MainWindow::on_inGain_valueChanged(int n)
{
  m_inGain=n;
}

void MainWindow::on_actionErase_ALL_TXT_triggered()          //Erase ALL.TXT
{
  int ret = MessageBox::query_message (this, tr ("Confirm Erase"),
                                         tr ("Are you sure you want to erase file ALL.TXT?"));
  if(ret==MessageBox::Yes) {
    QFile f {m_dataDir.absoluteFilePath ("ALL.TXT")};
    f.remove();
    m_RxLog=1;
  }
}

void MainWindow::on_actionErase_wsjtx_log_adi_triggered()
{
  int ret = MessageBox::query_message (this, tr ("Confirm Erase"),
                                       tr ("Are you sure you want to erase file wsjtx_log.adi?"));
  if(ret==MessageBox::Yes) {
    QFile f {m_dataDir.absoluteFilePath ("wsjtx_log.adi")};
    f.remove();
  }
}

void MainWindow::on_actionOpen_log_directory_triggered ()
{
  QDesktopServices::openUrl (QUrl::fromLocalFile (m_dataDir.absolutePath ()));
}

void MainWindow::on_bandComboBox_currentIndexChanged (int index)
{
  auto const& frequencies = m_config.frequencies ();
  auto const& source_index = frequencies->mapToSource (frequencies->index (index, FrequencyList::frequency_column));
  Frequency frequency {m_freqNominal};
  if (source_index.isValid ())
    {
      frequency = frequencies->frequency_list ()[source_index.row ()].frequency_;
    }

  // Lookup band
  auto const& band  = m_config.bands ()->find (frequency);
  if (!band.isEmpty ())
    {
      ui->bandComboBox->lineEdit ()->setStyleSheet ({});
      ui->bandComboBox->setCurrentText (band);
    }
  else
    {
      ui->bandComboBox->lineEdit ()->setStyleSheet ("QLineEdit {color: yellow; background-color : red;}");
      ui->bandComboBox->setCurrentText (m_config.bands ()->oob ());
    }
  displayDialFrequency ();
}

void MainWindow::on_bandComboBox_activated (int index)
{
  auto const& frequencies = m_config.frequencies ();
  auto const& source_index = frequencies->mapToSource (frequencies->index (index, FrequencyList::frequency_column));
  Frequency frequency {m_freqNominal};
  if (source_index.isValid ())
    {
      frequency = frequencies->frequency_list ()[source_index.row ()].frequency_;
    }
  m_bandEdited = true;
  band_changed (frequency);
  m_wideGraph->setRxBand (m_config.bands ()->find (frequency));
}

void MainWindow::band_changed (Frequency f)
{
  bool monitor_off=!m_monitoring;
  // Set the attenuation value if options are checked
  QString curBand = ui->bandComboBox->currentText();
  if (m_config.pwrBandTxMemory() && !m_tune) {
      if (m_pwrBandTxMemory.contains(curBand)) {
        ui->outAttenuation->setValue(m_pwrBandTxMemory[curBand].toInt());
      }
      else {
        m_pwrBandTxMemory[curBand] = ui->outAttenuation->value();
      }
  }

  if (m_bandEdited) {
    if (!m_mode.startsWith ("WSPR")) { // band hopping preserves auto Tx
      if (f + m_wideGraph->nStartFreq () > m_freqNominal + ui->TxFreqSpinBox->value ()
          || f + m_wideGraph->nStartFreq () + m_wideGraph->fSpan () <=
          m_freqNominal + ui->TxFreqSpinBox->value ()) {
//        qDebug () << "start f:" << m_wideGraph->nStartFreq () << "span:" << m_wideGraph->fSpan () << "DF:" << ui->TxFreqSpinBox->value ();
        // disable auto Tx if "blind" QSY outside of waterfall
        ui->stopTxButton->click (); // halt any transmission
        auto_tx_mode (false);       // disable auto Tx
      }
    }
    m_lastBand.clear ();
    m_bandEdited = false;
    psk_Reporter->sendReport();      // Upload any queued spots before changing band
    if (!m_transmitting) monitor (true);
    if ("FreqCal" == m_mode)
      {
        m_frequency_list_fcal_iter = m_config.frequencies ()->find (f);
        setRig (f - ui->RxFreqSpinBox->value ());
      }
    else
      {
        float r=m_freqNominal/(f+0.0001);
        if(r<0.9 or r>1.1) m_bVHFwarned=false;
        setRig (f);
        setXIT (ui->TxFreqSpinBox->value ());
      }
    if(monitor_off) monitor(false);
  }
}

void MainWindow::vhfWarning()
{
  MessageBox::warning_message (this, tr ("VHF features warning"),
     "VHF/UHF/Microwave features is enabled on a lower frequency band.");
  m_bVHFwarned=true;
}

void MainWindow::enable_DXCC_entity (bool on)
{
  if (on and !m_mode.startsWith ("WSPR") and m_mode!="Echo") {
    m_logBook.init();                        // re-read the log and cty.dat files
    ui->gridLayout->setColumnStretch(0,55);  // adjust proportions of text displays
    ui->gridLayout->setColumnStretch(1,45);
  } else {
    ui->gridLayout->setColumnStretch(0,0);
    ui->gridLayout->setColumnStretch(1,0);
  }
  updateGeometry ();
}

void MainWindow::on_pbCallCQ_clicked()
{
  genStdMsgs(m_rpt);
  ui->genMsg->setText(ui->tx6->text());
  m_ntx=7;
  m_gen_message_is_cq = true;
  ui->rbGenMsg->setChecked(true);
  if(m_transmitting) m_restart=true;
  set_dateTimeQSO(-1);
}

void MainWindow::on_pbAnswerCaller_clicked()
{
  genStdMsgs(m_rpt);
  QString t=ui->tx3->text();
  int i0=t.indexOf(" R-");
  if(i0<0) i0=t.indexOf(" R+");
  t=t.mid(0,i0+1)+t.mid(i0+2,3);
  ui->genMsg->setText(t);
  m_ntx=7;
  m_gen_message_is_cq = false;
  ui->rbGenMsg->setChecked(true);
  if(m_transmitting) m_restart=true;
  set_dateTimeQSO(2);
}

void MainWindow::on_pbSendRRR_clicked()
{
  genStdMsgs(m_rpt);
  ui->genMsg->setText(ui->tx4->text());
  m_ntx=7;
  m_gen_message_is_cq = false;
  ui->rbGenMsg->setChecked(true);
  if(m_transmitting) m_restart=true;
}

void MainWindow::on_pbAnswerCQ_clicked()
{
  genStdMsgs(m_rpt);
  ui->genMsg->setText(ui->tx1->text());
  QString t=ui->tx2->text();
  int i0=t.indexOf("/");
  int i1=t.indexOf(" ");
  if(i0>0 and i0<i1) ui->genMsg->setText(t);
  m_ntx=7;
  m_gen_message_is_cq = false;
  ui->rbGenMsg->setChecked(true);
  if(m_transmitting) m_restart=true;
}

void MainWindow::on_pbSendReport_clicked()
{
  genStdMsgs(m_rpt);
  ui->genMsg->setText(ui->tx3->text());
  m_ntx=7;
  m_gen_message_is_cq = false;
  ui->rbGenMsg->setChecked(true);
  if(m_transmitting) m_restart=true;
  set_dateTimeQSO(3);
}

void MainWindow::on_pbSend73_clicked()
{
  genStdMsgs(m_rpt);
  ui->genMsg->setText(ui->tx5->currentText());
  m_ntx=7;
  m_gen_message_is_cq = false;
  ui->rbGenMsg->setChecked(true);
  if(m_transmitting) m_restart=true;
}

void MainWindow::on_rbGenMsg_clicked(bool checked)
{
  m_freeText=!checked;
  if(!m_freeText) {
    if(m_ntx != 7 && m_transmitting) m_restart=true;
    m_ntx=7;
  }
}

void MainWindow::on_rbFreeText_clicked(bool checked)
{
  m_freeText=checked;
  if(m_freeText) {
    m_ntx=8;
    if (m_transmitting) m_restart=true;
  }
}

void MainWindow::on_freeTextMsg_currentTextChanged (QString const& text)
{
  msgtype(text, ui->freeTextMsg->lineEdit ());
}

void MainWindow::on_rptSpinBox_valueChanged(int n)
{
  int step=ui->rptSpinBox->singleStep();
  if(n%step !=0) {
    n++;
    ui->rptSpinBox->setValue(n);
  }
  m_rpt=QString::number(n);
  int ntx0=m_ntx;
  QString t=ui->tx5->currentText();
  genStdMsgs(m_rpt);
  if(!m_bDoubleClicked) ui->tx5->setCurrentText(t);
  m_ntx=ntx0;
  if(m_ntx==1) ui->txrb1->setChecked(true);
  if(m_ntx==2) ui->txrb2->setChecked(true);
  if(m_ntx==3) ui->txrb3->setChecked(true);
  if(m_ntx==4) ui->txrb4->setChecked(true);
  if(m_ntx==5) ui->txrb5->setChecked(true);
  if(m_ntx==6) ui->txrb6->setChecked(true);
  statusChanged();
}

void MainWindow::on_tuneButton_clicked (bool checked)
{
  static bool lastChecked = false;
  if (lastChecked == checked) return;
  lastChecked = checked;
  QString curBand = ui->bandComboBox->currentText();
  if (checked && m_tune==false) { // we're starting tuning so remember Tx and change pwr to Tune value
    if (m_config.pwrBandTuneMemory ()) {
      m_pwrBandTxMemory[curBand] = ui->outAttenuation->value(); // remember our Tx pwr
      m_PwrBandSetOK = false;
      if (m_pwrBandTuneMemory.contains(curBand)) {
        ui->outAttenuation->setValue(m_pwrBandTuneMemory[curBand].toInt()); // set to Tune pwr
      }
      m_PwrBandSetOK = true;
    }
  }
  else { // we're turning off so remember our Tune pwr setting and reset to Tx pwr
    if (m_config.pwrBandTuneMemory() || m_config.pwrBandTxMemory()) {
      m_pwrBandTuneMemory[curBand] = ui->outAttenuation->value(); // remember our Tune pwr
      m_PwrBandSetOK = false;
      ui->outAttenuation->setValue(m_pwrBandTxMemory[curBand].toInt()); // set to Tx pwr
      m_PwrBandSetOK = true;
    }
  }
  if (m_tune) {
    tuneButtonTimer.start(250);
  } else {
    m_sentFirst73=false;
    itone[0]=0;
    on_monitorButton_clicked (true);
    m_tune=true;
  }
  Q_EMIT tune (checked);
}

void MainWindow::stop_tuning ()
{
  on_tuneButton_clicked(false);
  ui->tuneButton->setChecked (false);
  m_bTxTime=false;
  m_tune=false;
}

void MainWindow::stopTuneATU()
{
  on_tuneButton_clicked(false);
  m_bTxTime=false;
}

void MainWindow::on_stopTxButton_clicked()                    //Stop Tx
{
  if (m_tune) stop_tuning ();
  if (m_auto and !m_tuneup) auto_tx_mode (false);
  m_btxok=false;
}

void MainWindow::rigOpen ()
{
  update_dynamic_property (ui->readFreq, "state", "warning");
  ui->readFreq->setText ("");
  ui->readFreq->setEnabled (true);
  m_config.transceiver_online ();
  Q_EMIT m_config.sync_transceiver (true, true);
}

void MainWindow::on_pbR2T_clicked()
{
  if (ui->TxFreqSpinBox->isEnabled ()) ui->TxFreqSpinBox->setValue(ui->RxFreqSpinBox->value ());
}

void MainWindow::on_pbT2R_clicked()
{
  if (ui->RxFreqSpinBox->isEnabled ())
    {
      ui->RxFreqSpinBox->setValue (ui->TxFreqSpinBox->value ());
    }
}


void MainWindow::on_readFreq_clicked()
{
  if (m_transmitting) return;

  if (m_config.transceiver_online ())
    {
      Q_EMIT m_config.sync_transceiver (true, true);
    }
}

void MainWindow::on_pbTxMode_clicked()
{
  if(m_modeTx=="JT9") {
    m_modeTx="JT65";
    ui->pbTxMode->setText("Tx JT65  #");
  } else {
    m_modeTx="JT9";
    ui->pbTxMode->setText("Tx JT9  @");
  }
  m_wideGraph->setModeTx(m_modeTx);
  statusChanged();
}

void MainWindow::setXIT(int n, Frequency base)
{
  if (m_transmitting && !m_config.tx_QSY_allowed ()) return;
  // If "CQ nnn ..." feature is active, set the proper Tx frequency
  if(m_config.split_mode () && ui->cbCQTx->isEnabled () && ui->cbCQTx->isVisible () &&
     ui->cbCQTx->isChecked())
    {
      if (6 == m_ntx || (7 == m_ntx && m_gen_message_is_cq))
        {
          // All conditions are met, use calling frequency
          base = m_freqNominal / 1000000 * 1000000 + 1000 * ui->sbCQTxFreq->value () + m_XIT;
        }
    }
  if (!base) base = m_freqNominal;
  m_XIT = 0;
  if (!m_bSimplex) {
    // m_bSimplex is false, so we can use split mode if requested
    if (m_config.split_mode () && !m_config.enable_VHF_features ()) {
      // Don't use XIT for VHF & up
      m_XIT=(n/500)*500 - 1500;
    }

    if ((m_monitoring || m_transmitting)
        && m_config.is_transceiver_online ()
        && m_config.split_mode ())
      {
        // All conditions are met, reset the transceiver Tx dial
        // frequency
        m_freqTxNominal = base + m_XIT;
        if (m_astroWidget) m_astroWidget->nominal_frequency (m_freqNominal, m_freqTxNominal);
        Q_EMIT m_config.transceiver_tx_frequency (m_freqTxNominal + m_astroCorrection.tx);
      }
  }
  //Now set the audio Tx freq
  Q_EMIT transmitFrequency (ui->TxFreqSpinBox->value () - m_XIT);
}

void MainWindow::setFreq4(int rxFreq, int txFreq)
{
  if (ui->RxFreqSpinBox->isEnabled ())
    {
      ui->RxFreqSpinBox->setValue(rxFreq);
    }

  if(m_mode.startsWith ("WSPR")) {
    ui->WSPRfreqSpinBox->setValue(txFreq);
  } else {
    if (ui->TxFreqSpinBox->isEnabled ()) {
      ui->TxFreqSpinBox->setValue(txFreq);
    }
    else if (m_config.enable_VHF_features ()
             && (Qt::ControlModifier & QApplication::keyboardModifiers ())) {
      // for VHF & up we adjust Tx dial frequency to equalize Tx to Rx
      // when user CTRL+clicks on waterfall
      auto temp = ui->TxFreqSpinBox->value ();
      ui->RxFreqSpinBox->setValue (temp);
      setRig (m_freqNominal + txFreq - temp);
      setXIT (ui->TxFreqSpinBox->value ());
    }
  }
}

void MainWindow::on_cbTxLock_clicked(bool checked)
{
  m_lockTxFreq=checked;
  m_wideGraph->setLockTxFreq(m_lockTxFreq);
  if(m_lockTxFreq) on_pbR2T_clicked();
}

void MainWindow::handle_transceiver_update (Transceiver::TransceiverState const& s)
{
  // qDebug () << "MainWindow::handle_transceiver_update:" << s;
  Transceiver::TransceiverState old_state {m_rigState};
  //transmitDisplay (s.ptt ());
  m_rigState = s;
  if (old_state.online () == false && s.online () == true)
    {
      // initializing
      on_monitorButton_clicked (!m_config.monitor_off_at_startup ());
    }
  if (s.frequency () != old_state.frequency () || s.split () != m_splitMode)
    {
      m_splitMode = s.split ();
      if (!s.ptt ()) //!m_transmitting)
        {
          auto temp = m_freqNominal;
          m_freqNominal = s.frequency () - m_astroCorrection.rx;
          if (temp != m_freqNominal)
            {
              m_freqTxNominal = m_freqNominal;
              genCQMsg ();
            }

          if (m_monitoring)
            {
              m_lastMonitoredFrequency = m_freqNominal;
            }
          if (m_lastDialFreq != m_freqNominal &&
              (m_mode != "MSK144"
               || !(ui->cbCQTx->isEnabled () && ui->cbCQTx->isVisible () && ui->cbCQTx->isChecked()))) {
            m_lastDialFreq = m_freqNominal;
            m_secBandChanged=QDateTime::currentMSecsSinceEpoch()/1000;
            if(s.frequency () < 30000000u && !m_mode.startsWith ("WSPR")) {
              // Write freq changes to ALL.TXT only below 30 MHz.
              QFile f2 {m_dataDir.absoluteFilePath ("ALL.TXT")};
              if (f2.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
                QTextStream out(&f2);
                out << QDateTime::currentDateTimeUtc().toString("yyyy-MM-dd hh:mm")
                    << "  " << qSetRealNumberPrecision (12) << (m_freqNominal / 1.e6) << " MHz  "
                    << m_mode << endl;
                f2.close();
              } else {
                MessageBox::warning_message (this, tr ("File Error")
                                             ,tr ("Cannot open \"%1\" for append: %2")
                                             .arg (f2.fileName ()).arg (f2.errorString ()));
              }
            }

            if (m_config.spot_to_psk_reporter ()) {
              pskSetLocal ();
            }
            statusChanged();
            m_wideGraph->setDialFreq(m_freqNominal / 1.e6);
          }
      } else {
        m_freqTxNominal = s.split () ? s.tx_frequency () - m_astroCorrection.tx : s.frequency ();
      }
      if (m_astroWidget) m_astroWidget->nominal_frequency (m_freqNominal, m_freqTxNominal);
  }
  // ensure frequency display is correct
  if (m_astroWidget && old_state.ptt () != s.ptt ()) setRig ();

  displayDialFrequency ();
  update_dynamic_property (ui->readFreq, "state", "ok");
  ui->readFreq->setEnabled (false);
  ui->readFreq->setText (s.split () ? "S" : "");
}

void MainWindow::handle_transceiver_failure (QString const& reason)
{
  update_dynamic_property (ui->readFreq, "state", "error");
  ui->readFreq->setEnabled (true);
  on_stopTxButton_clicked ();
  rigFailure (reason);
}

void MainWindow::rigFailure (QString const& reason)
{
  if (m_first_error)
    {
      // one automatic retry
      QTimer::singleShot (0, this, SLOT (rigOpen ()));
      m_first_error = false;
    }
  else
    {
      if (m_splash && m_splash->isVisible ()) m_splash->hide ();
      m_rigErrorMessageBox.setDetailedText (reason);

      // don't call slot functions directly to avoid recursion
      m_rigErrorMessageBox.exec ();
      auto const clicked_button = m_rigErrorMessageBox.clickedButton ();
      if (clicked_button == m_configurations_button)
        {
          ui->menuConfig->exec (QCursor::pos ());
        }
      else
        {
          switch (m_rigErrorMessageBox.standardButton (clicked_button))
            {
            case MessageBox::Ok:
              QTimer::singleShot (0, this, SLOT (on_actionSettings_triggered ()));
              break;

            case MessageBox::Retry:
              QTimer::singleShot (0, this, SLOT (rigOpen ()));
              break;

            case MessageBox::Cancel:
              QTimer::singleShot (0, this, SLOT (close ()));
              break;

            default: break;     // squashing compile warnings
            }
        }
      m_first_error = true;     // reset
    }
}

void MainWindow::transmit (double snr)
{
  double toneSpacing=0.0;
  if (m_modeTx == "JT65") {
    if(m_nSubMode==0) toneSpacing=11025.0/4096.0;
    if(m_nSubMode==1) toneSpacing=2*11025.0/4096.0;
    if(m_nSubMode==2) toneSpacing=4*11025.0/4096.0;
    Q_EMIT sendMessage (NUM_JT65_SYMBOLS,
           4096.0*12000.0/11025.0, ui->TxFreqSpinBox->value () - m_XIT,
           toneSpacing, m_soundOutput, m_config.audio_output_channel (),
           true, false, snr, m_TRperiod);
  }

  if (m_modeTx == "FT8") {
    toneSpacing=12000.0/2048.0;
    Q_EMIT sendMessage (NUM_FT8_SYMBOLS,
           2048.0, ui->TxFreqSpinBox->value () - m_XIT,
           toneSpacing, m_soundOutput, m_config.audio_output_channel (),
           true, false, snr, m_TRperiod);
  }

  if (m_modeTx == "QRA64") {
    if(m_nSubMode==0) toneSpacing=12000.0/6912.0;
    if(m_nSubMode==1) toneSpacing=2*12000.0/6912.0;
    if(m_nSubMode==2) toneSpacing=4*12000.0/6912.0;
    if(m_nSubMode==3) toneSpacing=8*12000.0/6912.0;
    if(m_nSubMode==4) toneSpacing=16*12000.0/6912.0;
    Q_EMIT sendMessage (NUM_QRA64_SYMBOLS,
           6912.0, ui->TxFreqSpinBox->value () - m_XIT,
           toneSpacing, m_soundOutput, m_config.audio_output_channel (),
           true, false, snr, m_TRperiod);
  }

  if (m_modeTx == "JT9") {
    int nsub=pow(2,m_nSubMode);
    int nsps[]={480,240,120,60};
    double sps=m_nsps;
    m_toneSpacing=nsub*12000.0/6912.0;
    bool fastmode=false;
    if(m_bFast9 and (m_nSubMode>=4)) {
      fastmode=true;
      sps=nsps[m_nSubMode-4];
      m_toneSpacing=12000.0/sps;
    }
    Q_EMIT sendMessage (NUM_JT9_SYMBOLS, sps,
                        ui->TxFreqSpinBox->value() - m_XIT, m_toneSpacing,
                        m_soundOutput, m_config.audio_output_channel (),
                        true, fastmode, snr, m_TRperiod);
  }

  if (m_modeTx == "MSK144") {
    m_nsps=6;
    double f0=1000.0;
    if(!m_bFastMode) {
      m_nsps=192;
      f0=ui->TxFreqSpinBox->value () - m_XIT - 0.5*m_toneSpacing;
    }
    m_toneSpacing=6000.0/m_nsps;
    m_FFTSize = 7 * 512;
    Q_EMIT FFTSize (m_FFTSize);
    int nsym;
    nsym=NUM_MSK144_SYMBOLS;
    if(itone[40] < 0) nsym=40;
    Q_EMIT sendMessage (nsym, double(m_nsps), f0, m_toneSpacing,
                        m_soundOutput, m_config.audio_output_channel (),
                        true, true, snr, m_TRperiod);
  }

  if (m_modeTx == "JT4") {
    if(m_nSubMode==0) toneSpacing=4.375;
    if(m_nSubMode==1) toneSpacing=2*4.375;
    if(m_nSubMode==2) toneSpacing=4*4.375;
    if(m_nSubMode==3) toneSpacing=9*4.375;
    if(m_nSubMode==4) toneSpacing=18*4.375;
    if(m_nSubMode==5) toneSpacing=36*4.375;
    if(m_nSubMode==6) toneSpacing=72*4.375;
    Q_EMIT sendMessage (NUM_JT4_SYMBOLS,
           2520.0*12000.0/11025.0, ui->TxFreqSpinBox->value () - m_XIT,
           toneSpacing, m_soundOutput, m_config.audio_output_channel (),
           true, false, snr, m_TRperiod);
  }
  if (m_mode=="WSPR") {
    int nToneSpacing=1;
    if(m_config.x2ToneSpacing()) nToneSpacing=2;
    Q_EMIT sendMessage (NUM_WSPR_SYMBOLS, 8192.0,
                        ui->TxFreqSpinBox->value() - 1.5 * 12000 / 8192,
                        m_toneSpacing*nToneSpacing, m_soundOutput,
                        m_config.audio_output_channel(),true, false, snr,
                        m_TRperiod);
  }
  if (m_mode=="WSPR-LF") {
    Q_EMIT sendMessage (NUM_WSPR_LF_SYMBOLS, 24576.0,
                        ui->TxFreqSpinBox->value(),
                        m_toneSpacing, m_soundOutput,
                        m_config.audio_output_channel(),true, false, snr,
                        m_TRperiod);
  }
  if(m_mode=="Echo") {
    //??? should use "fastMode = true" here ???
    Q_EMIT sendMessage (27, 1024.0, 1500.0, 0.0, m_soundOutput,
                        m_config.audio_output_channel(),
                        false, false, snr, m_TRperiod);
  }

  if(m_mode=="ISCAT") {
    double sps,f0;
    if(m_nSubMode==0) {
      sps=512.0*12000.0/11025.0;
      toneSpacing=11025.0/512.0;
      f0=47*toneSpacing;
    } else {
      sps=256.0*12000.0/11025.0;
      toneSpacing=11025.0/256.0;
      f0=13*toneSpacing;
    }
    Q_EMIT sendMessage (NUM_ISCAT_SYMBOLS, sps, f0, toneSpacing, m_soundOutput,
                        m_config.audio_output_channel(),
                        true, true, snr, m_TRperiod);
  }

// In auto-sequencing mode, stop after 5 transmissions of "73" message.
  if (m_bFastMode || m_bFast9) {
    if (ui->cbAutoSeq->isVisible () && ui->cbAutoSeq->isChecked ()) {
      if(m_ntx==5) {
        m_nTx73 += 1;
      } else {
        m_nTx73=0;
      }
    }
  }
}

void MainWindow::on_outAttenuation_valueChanged (int a)
{
  QString tt_str;
  qreal dBAttn {a / 10.};       // slider interpreted as dB / 100
  if (m_tune && m_config.pwrBandTuneMemory()) {
    tt_str = tr ("Tune digital gain");
  } else {
    tt_str = tr ("Transmit digital gain");
  }
  tt_str += (a ? QString::number (-dBAttn, 'f', 1) : "0") + "dB";
  if (!m_block_pwr_tooltip) {
    QToolTip::showText (QCursor::pos (), tt_str, ui->outAttenuation);
  }
  QString curBand = ui->bandComboBox->currentText();
  if (m_PwrBandSetOK && !m_tune && m_config.pwrBandTxMemory ()) {
    m_pwrBandTxMemory[curBand] = a; // remember our Tx pwr
  }
  if (m_PwrBandSetOK && m_tune && m_config.pwrBandTuneMemory()) {
    m_pwrBandTuneMemory[curBand] = a; // remember our Tune pwr
  }
  Q_EMIT outAttenuationChanged (dBAttn);
}

void MainWindow::on_actionShort_list_of_add_on_prefixes_and_suffixes_triggered()
{
  if (!m_prefixes) {
    m_prefixes.reset (new HelpTextWindow {tr ("Prefixes"), ":/prefixes.txt", {"Courier", 10}});
  }
  m_prefixes->showNormal();
  m_prefixes->raise ();
}

bool MainWindow::shortList(QString callsign)
{
  int n=callsign.length();
  int i1=callsign.indexOf("/");
  Q_ASSERT(i1>0 and i1<n);
  QString t1=callsign.mid(0,i1);
  QString t2=callsign.mid(i1+1,n-i1-1);
  bool b=(m_pfx.contains(t1) or m_sfx.contains(t2));
  return b;
}

void MainWindow::pskSetLocal ()
{
  // find the station row, if any, that matches the band we are on
  auto stations = m_config.stations ();
  auto matches = stations->match (stations->index (0, StationList::band_column)
                                  , Qt::DisplayRole
                                  , ui->bandComboBox->currentText ()
                                  , 1
                                  , Qt::MatchExactly);
  QString antenna_description;
  if (!matches.isEmpty ()) {
    antenna_description = stations->index (matches.first ().row ()
                                           , StationList::description_column).data ().toString ();
  }
  // qDebug() << "To PSKreporter: local station details";
  psk_Reporter->setLocalStation(m_config.my_callsign (), m_config.my_grid (),
        antenna_description, QString {"WSJT-X v" + version() + " " +
        m_revision}.simplified ());
}

void MainWindow::transmitDisplay (bool transmitting)
{
  if (transmitting == m_transmitting) {
    if (transmitting) {
      ui->signal_meter_widget->setValue(0,0);
      if (m_monitoring) monitor (false);
      m_btxok=true;
    }

    auto QSY_allowed = !transmitting or m_config.tx_QSY_allowed () or
      !m_config.split_mode ();
    if (ui->cbTxLock->isChecked ()) {
      ui->RxFreqSpinBox->setEnabled (QSY_allowed);
      ui->pbT2R->setEnabled (QSY_allowed);
    }

    if (!m_mode.startsWith ("WSPR")) {
      if(m_config.enable_VHF_features ()) {
//### During tests, at least, allow use of Tx Freq spinner with VHF features enabled.
        // used fixed 1000Hz Tx DF for VHF & up QSO modes
//        ui->TxFreqSpinBox->setValue(1000);
//        ui->TxFreqSpinBox->setEnabled (false);
        ui->TxFreqSpinBox->setEnabled (true);
//###
      } else {
        ui->TxFreqSpinBox->setEnabled (QSY_allowed and !m_bFastMode);
        ui->pbR2T->setEnabled (QSY_allowed);
        ui->cbTxLock->setEnabled (QSY_allowed);
      }
    }

    // the following are always disallowed in transmit
    ui->menuMode->setEnabled (!transmitting);
    //ui->bandComboBox->setEnabled (!transmitting);
    if (!transmitting) {
      if (m_mode == "JT9+JT65") {
        // allow mode switch in Rx when in dual mode
        ui->pbTxMode->setEnabled (true);
      }
    } else {
      ui->pbTxMode->setEnabled (false);
    }
  }
}

void MainWindow::on_sbFtol_valueChanged(int value)
{
  m_wideGraph->setTol (value);
}

void::MainWindow::VHF_features_enabled(bool b)
{
  if(m_mode!="JT4" and m_mode!="JT65") b=false;
  if(b and (ui->actionInclude_averaging->isChecked() or
             ui->actionInclude_correlation->isChecked())) {
    ui->actionDeepestDecode->setChecked (true);
  }
  ui->actionInclude_averaging->setEnabled(b);
  ui->actionInclude_correlation->setEnabled(b);
  ui->actionMessage_averaging->setEnabled(b);
  ui->actionEnable_AP_DXcall->setEnabled(m_mode=="QRA64");
  if(!b && m_msgAvgWidget) {
    if(m_msgAvgWidget->isVisible()) m_msgAvgWidget->close();
  }
}

void MainWindow::on_sbTR_valueChanged(int value)
{
//  if(!m_bFastMode and n>m_nSubMode) m_MinW=m_nSubMode;
  if(m_bFastMode or m_mode=="FreqCal") {
    m_TRperiod = value;
    m_fastGraph->setTRperiod (value);
    m_modulator->setPeriod (value); // TODO - not thread safe
    m_detector->setPeriod (value);  // TODO - not thread safe
    m_wideGraph->setPeriod (value, m_nsps);
    progressBar.setMaximum (value);
  }
  if(m_monitoring) {
    on_stopButton_clicked();
    on_monitorButton_clicked(true);
  }
  if(m_transmitting) {
    on_stopTxButton_clicked();
  }
}

QChar MainWindow::current_submode () const
{
  QChar submode {0};
  if (m_mode.contains (QRegularExpression {R"(^(JT65|JT9|JT4|ISCAT|QRA64)$)"})
      && (m_config.enable_VHF_features () || "JT4" == m_mode || "ISCAT" == m_mode))
    {
      submode = m_nSubMode + 65;
    }
  return submode;
}

void MainWindow::on_sbSubmode_valueChanged(int n)
{
  m_nSubMode=n;
  m_wideGraph->setSubMode(m_nSubMode);
  auto submode = current_submode ();
  if (submode != QChar::Null)
    {
      mode_label.setText (m_mode + " " + submode);
    }
  else
    {
      mode_label.setText (m_mode);
    }
  if(m_mode=="ISCAT") {
    if(m_nSubMode==0) ui->TxFreqSpinBox->setValue(1012);
    if(m_nSubMode==1) ui->TxFreqSpinBox->setValue(560);
  }
  if(m_mode=="JT9") {
    if(m_nSubMode<4) {
      ui->cbFast9->setChecked(false);
      on_cbFast9_clicked(false);
      ui->cbFast9->setEnabled(false);
      ui->sbTR->setVisible(false);
      m_TRperiod=60;
    } else {
      ui->cbFast9->setEnabled(true);
    }
    ui->sbTR->setVisible(m_bFast9);
    if(m_bFast9) ui->TxFreqSpinBox->setValue(700);
  }
  if(m_transmitting and m_bFast9 and m_nSubMode>=4) transmit(99.0);
  statusUpdate ();
}

void MainWindow::on_cbFast9_clicked(bool b)
{
  if(m_mode=="JT9") {
    m_bFast9=b;
//    ui->cbAutoSeq->setVisible(b);
    on_actionJT9_triggered();
  }

  if(b) {
    m_TRperiod = ui->sbTR->value ();
  } else {
    m_TRperiod=60;
  }
  progressBar.setMaximum(m_TRperiod);
  m_wideGraph->setPeriod(m_TRperiod,m_nsps);
  fast_config(b);
  statusChanged ();
}


void MainWindow::on_cbShMsgs_toggled(bool b)
{
  ui->cbTx6->setEnabled(b);
  m_bShMsgs=b;
  if(b) ui->cbSWL->setChecked(false);
  if(m_bShMsgs and (m_mode=="MSK144")) ui->rptSpinBox->setValue(1);
  int itone0=itone[0];
  int ntx=m_ntx;
  genStdMsgs(m_rpt);
  itone[0]=itone0;
  if(ntx==1) ui->txrb1->setChecked(true);
  if(ntx==2) ui->txrb2->setChecked(true);
  if(ntx==3) ui->txrb3->setChecked(true);
  if(ntx==4) ui->txrb4->setChecked(true);
  if(ntx==5) ui->txrb5->setChecked(true);
  if(ntx==6) ui->txrb6->setChecked(true);
}

void MainWindow::on_cbSWL_toggled(bool b)
{
  if(b) ui->cbShMsgs->setChecked(false);
}

void MainWindow::on_cbTx6_toggled(bool b)
{
  QString t;
  if(b) {
    t="@1250  (SEND MSGS)";
  } else {
    t="@1000  (TUNE)";
  }
  ui->tx6->setText(t);
}

// Takes a decoded CQ line and sets it up for reply
void MainWindow::replyToCQ (QTime time, qint32 snr, float delta_time, quint32 delta_frequency, QString const& mode, QString const& message_text)
{
  if (!m_config.accept_udp_requests ())
    {
      return;
    }

  if (message_text.contains (QRegularExpression {R"(^(CQ |CQDX |QRZ ))"}))
    {
      // a message we are willing to accept
      QString format_string {"%1 %2 %3 %4 %5  %6"};
      auto cqtext = format_string.arg (time.toString ("hhmm"))
                                                    .arg (snr, 3)
                                                    .arg (delta_time, 4, 'f', 1)
                                                    .arg (delta_frequency, 4)
                                                    .arg (mode)
                                                    .arg (message_text);
      auto messages = ui->decodedTextBrowser->toPlainText ();
      auto position = messages.lastIndexOf (cqtext);
      if (position < 0)
        {
          // try again with with -0.0 delta time
          position = messages.lastIndexOf (format_string.arg (time.toString ("hhmm"))
                                           .arg (snr, 3)
                                           .arg ('-' + QString::number (delta_time, 'f', 1), 4)
                                           .arg (delta_frequency, 4)
                                           .arg (mode)
                                           .arg (message_text));
        }
      if (position >= 0)
        {
          if (m_config.udpWindowToFront ())
            {
              show ();
              raise ();
              activateWindow ();
            }
          if (m_config.udpWindowRestore () && isMinimized ())
            {
              showNormal ();
              raise ();
            }
          // find the linefeed at the end of the line
          position = ui->decodedTextBrowser->toPlainText().indexOf(QChar::LineFeed,position);
          processMessage (messages, position, false);
          tx_watchdog (false);
          QApplication::alert (this);
        }
      else
        {
          qDebug () << "reply to CQ request ignored, decode not found:" << cqtext;
        }
    }
  else
    {
      qDebug () << "rejecting UDP request to reply as decode is not a CQ or QRZ";
    }
}

void MainWindow::replayDecodes ()
{
  // we accept this request even if the setting to accept UDP requests
  // is not checked

  // attempt to parse the decoded text
  Q_FOREACH (auto const& message
             , ui->decodedTextBrowser->toPlainText ().split (QChar::LineFeed,
                                                             QString::SkipEmptyParts))
    {
      if (message.size() >= 4 && message.left (4) != "----")
        {
          auto const& parts = message.split (' ', QString::SkipEmptyParts);
          if (parts.size () >= 5 && parts[3].contains ('.')) // WSPR
            {
              postWSPRDecode (false, parts);
            }
          else
            {
              auto eom_pos = message.indexOf (' ', 35);
              // we always want at least the characters to position 35
              if (eom_pos < 35)
                {
                  eom_pos = message.size () - 1;
                }
              // TODO - how to skip ISCAT decodes
              postDecode (false, message.left (eom_pos + 1));
            }
        }
    }
  statusChanged ();
}

void MainWindow::postDecode (bool is_new, QString const& message)
{
  auto const& decode = message.trimmed ();
  auto const& parts = decode.left (22).split (' ', QString::SkipEmptyParts);
  if (parts.size () >= 5)
    {
      m_messageClient->decode (is_new
                               , QTime::fromString (parts[0], parts[0].size () > 4 ? "hhmmss" : "hhmm")
                               , parts[1].toInt ()
                               , parts[2].toFloat (), parts[3].toUInt (), parts[4][0], decode.mid (22));
    }
}

void MainWindow::postWSPRDecode (bool is_new, QStringList parts)
{
  if (parts.size () < 8)
    {
      parts.insert (6, "");
    }
  m_messageClient->WSPR_decode (is_new, QTime::fromString (parts[0], "hhmm"), parts[1].toInt ()
                                , parts[2].toFloat (), Radio::frequency (parts[3].toFloat (), 6)
                                , parts[4].toInt (), parts[5].remove ("&lt;").remove ("&gt;")
                                , parts[6], parts[7].toInt ());
}

void MainWindow::networkError (QString const& e)
{
  if (m_splash && m_splash->isVisible ()) m_splash->hide ();
  if (MessageBox::Retry == MessageBox::warning_message (this, tr ("Network Error")
                                                        , tr ("Error: %1\nUDP server %2:%3")
                                                        .arg (e)
                                                        .arg (m_config.udp_server_name ())
                                                        .arg (m_config.udp_server_port ())
                                                        , QString {}
                                                        , MessageBox::Cancel | MessageBox::Retry
                                                        , MessageBox::Cancel))
    {
      // retry server lookup
      m_messageClient->set_server (m_config.udp_server_name ());
    }
}

void MainWindow::on_syncSpinBox_valueChanged(int n)
{
  m_minSync=n;
}

void MainWindow::p1ReadFromStdout()                        //p1readFromStdout
{
  QString t1;
  while(p1.canReadLine()) {
    QString t(p1.readLine());
    if(t.indexOf("<DecodeFinished>") >= 0) {
      m_bDecoded = m_nWSPRdecodes > 0;
      if(!m_diskData) {
        WSPR_history(m_dialFreqRxWSPR, m_nWSPRdecodes);
        if(m_nWSPRdecodes==0 and ui->band_hopping_group_box->isChecked()) {
          t = " Receiving " + m_mode + " ----------------------- " +
              m_config.bands ()->find (m_dialFreqRxWSPR);
          t=WSPR_hhmm(-60) + ' ' + t.rightJustified (66, '-');
          ui->decodedTextBrowser->appendText(t);
        }
        killFileTimer.start (45*1000); //Kill in 45s (for slow modes)
      }
      m_nWSPRdecodes=0;
      ui->DecodeButton->setChecked (false);
      if(m_uploadSpots
         && m_config.is_transceiver_online ()) { // need working rig control
        float x=qrand()/((double)RAND_MAX + 1.0);
        int msdelay=20000*x;
        uploadTimer.start(msdelay);                         //Upload delay
      } else {
        QFile f(QDir::toNativeSeparators(m_dataDir.absolutePath()) + "/wspr_spots.txt");
        if(f.exists()) f.remove();
      }
      m_RxLog=0;
      m_startAnother=m_loopall;
      m_blankLine=true;
      m_decoderBusy = false;
      statusUpdate ();
    } else {

      int n=t.length();
      t=t.mid(0,n-2) + "                                                  ";
      t.remove(QRegExp("\\s+$"));
      QStringList rxFields = t.split(QRegExp("\\s+"));
      QString rxLine;
      QString grid="";
      if ( rxFields.count() == 8 ) {
          rxLine = QString("%1 %2 %3 %4 %5   %6  %7  %8")
                  .arg(rxFields.at(0), 4)
                  .arg(rxFields.at(1), 4)
                  .arg(rxFields.at(2), 5)
                  .arg(rxFields.at(3), 11)
                  .arg(rxFields.at(4), 4)
                  .arg(rxFields.at(5).leftJustified (12).replace ('<', "&lt;").replace ('>', "&gt;"))
                  .arg(rxFields.at(6), -6)
                  .arg(rxFields.at(7), 3);
          postWSPRDecode (true, rxFields);
          grid = rxFields.at(6);
      } else if ( rxFields.count() == 7 ) { // Type 2 message
          rxLine = QString("%1 %2 %3 %4 %5   %6  %7  %8")
                  .arg(rxFields.at(0), 4)
                  .arg(rxFields.at(1), 4)
                  .arg(rxFields.at(2), 5)
                  .arg(rxFields.at(3), 11)
                  .arg(rxFields.at(4), 4)
                  .arg(rxFields.at(5).leftJustified (12).replace ('<', "&lt;").replace ('>', "&gt;"))
                  .arg("", -6)
                  .arg(rxFields.at(6), 3);
          postWSPRDecode (true, rxFields);
      } else {
          rxLine = t;
      }
      if(grid!="") {
        double utch=0.0;
        int nAz,nEl,nDmiles,nDkm,nHotAz,nHotABetter;
        azdist_(const_cast <char *> (m_config.my_grid ().toLatin1().constData()),
                const_cast <char *> (grid.toLatin1().constData()),&utch,
                &nAz,&nEl,&nDmiles,&nDkm,&nHotAz,&nHotABetter,6,6);
        QString t1;
        if(m_config.miles()) {
          t1.sprintf("%7d",nDmiles);
        } else {
          t1.sprintf("%7d",nDkm);
        }
        rxLine += t1;
      }

      if (m_config.insert_blank () && m_blankLine) {
        QString band;
        Frequency f=1000000.0*rxFields.at(3).toDouble()+0.5;
        band = ' ' + m_config.bands ()->find (f);
        ui->decodedTextBrowser->appendText(band.rightJustified (71, '-'));
        m_blankLine = false;
      }
      m_nWSPRdecodes += 1;
      ui->decodedTextBrowser->appendText(rxLine);
    }
  }
}

QString MainWindow::WSPR_hhmm(int n)
{
  QDateTime t=QDateTime::currentDateTimeUtc().addSecs(n);
  int m=t.toString("hhmm").toInt()/2;
  QString t1;
  t1.sprintf("%04d",2*m);
  return t1;
}

void MainWindow::WSPR_history(Frequency dialFreq, int ndecodes)
{
  QDateTime t=QDateTime::currentDateTimeUtc().addSecs(-60);
  QString t1=t.toString("yyMMdd");
  QString t2=WSPR_hhmm(-60);
  QString t3;
  t3.sprintf("%13.6f",0.000001*dialFreq);
  if(ndecodes<0) {
    t1=t1 + " " + t2 + t3 + "  T";
  } else {
    QString t4;
    t4.sprintf("%4d",ndecodes);
    t1=t1 + " " + t2 + t3 + "  R" + t4;
  }
  QFile f {m_dataDir.absoluteFilePath ("WSPR_history.txt")};
  if (f.open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Append)) {
    QTextStream out(&f);
    out << t1 << endl;
    f.close();
  } else {
    MessageBox::warning_message (this, tr ("File Error")
                                 , tr ("Cannot open \"%1\" for append: %2")
                                 .arg (f.fileName ()).arg (f.errorString ()));
  }
}


void MainWindow::uploadSpots()
{
  // do not spot replays or if rig control not working
  if(m_diskData || !m_config.is_transceiver_online ()) return;
  if(m_uploading) {
    qDebug() << "Previous upload has not completed, spots were lost";
    wsprNet->abortOutstandingRequests ();
    m_uploading = false;
  }
  QString rfreq = QString("%1").arg(0.000001*(m_dialFreqRxWSPR + 1500), 0, 'f', 6);
  QString tfreq = QString("%1").arg(0.000001*(m_dialFreqRxWSPR +
                        ui->TxFreqSpinBox->value()), 0, 'f', 6);
  wsprNet->upload(m_config.my_callsign(), m_config.my_grid(), rfreq, tfreq,
                  m_mode, QString::number(ui->autoButton->isChecked() ? m_pctx : 0),
                  QString::number(m_dBm), version(),
                  QDir::toNativeSeparators(m_dataDir.absolutePath()) + "/wspr_spots.txt");
  m_uploading = true;
}

void MainWindow::uploadResponse(QString response)
{
  if (response == "done") {
    m_uploading=false;
  } else {
    if (response.startsWith ("Upload Failed")) {
      m_uploading=false;
    }
    qDebug () << "WSPRnet.org status:" << response;
  }
}

void MainWindow::on_TxPowerComboBox_currentIndexChanged(const QString &arg1)
{
  int i1=arg1.indexOf(" ");
  m_dBm=arg1.mid(0,i1).toInt();
}

void MainWindow::on_sbTxPercent_valueChanged(int n)
{
  m_pctx=n;
  if(m_pctx>0) {
    ui->pbTxNext->setEnabled(true);
  } else {
    m_txNext=false;
    ui->pbTxNext->setChecked(false);
    ui->pbTxNext->setEnabled(false);
  }
}

void MainWindow::on_cbUploadWSPR_Spots_toggled(bool b)
{
  m_uploadSpots=b;
  if(m_uploadSpots) ui->cbUploadWSPR_Spots->setStyleSheet("");
  if(!m_uploadSpots) ui->cbUploadWSPR_Spots->setStyleSheet(
        "QCheckBox{background-color: yellow}");
}

void MainWindow::on_WSPRfreqSpinBox_valueChanged(int n)
{
  ui->TxFreqSpinBox->setValue(n);
}

void MainWindow::on_pbTxNext_clicked(bool b)
{
  m_txNext=b;
}

void MainWindow::WSPR_scheduling ()
{
  m_WSPR_tx_next = false;
  if (m_config.is_transceiver_online () // need working rig control for hopping
      && !m_config.is_dummy_rig ()
      && ui->band_hopping_group_box->isChecked ()) {
    auto hop_data = m_WSPR_band_hopping.next_hop (m_auto);
    qDebug () << "hop data: period:" << hop_data.period_name_
              << "frequencies index:" << hop_data.frequencies_index_
              << "tune:" << hop_data.tune_required_
              << "tx:" << hop_data.tx_next_;
    m_WSPR_tx_next = hop_data.tx_next_;
    if (hop_data.frequencies_index_ >= 0) { // new band
      ui->bandComboBox->setCurrentIndex (hop_data.frequencies_index_);
      on_bandComboBox_activated (hop_data.frequencies_index_);
      m_cmnd.clear ();
      QStringList prefixes {".bat", ".cmd", ".exe", ""};
      for (auto const& prefix : prefixes)
        {
          auto const& path = m_appDir + "/user_hardware" + prefix;
          QFile f {path};
          if (f.exists ()) {
            m_cmnd = QDir::toNativeSeparators (f.fileName ()) + ' ' +
              m_config.bands ()->find (m_freqNominal).remove ('m');
          }
        }
      if(m_cmnd!="") p3.start(m_cmnd);     // Execute user's hardware controller

      // Produce a short tuneup signal
      m_tuneup = false;
      if (hop_data.tune_required_) {
        m_tuneup = true;
        on_tuneButton_clicked (true);
        tuneATU_Timer.start (2500);
      }
    }

    // Display grayline status
    band_hopping_label.setText (hop_data.period_name_);
  }
  else {
    m_WSPR_tx_next = m_WSPR_band_hopping.next_is_tx ("WSPR-LF" == m_mode);
  }
}

void MainWindow::astroUpdate ()
{
  if (m_astroWidget)
    {
      auto correction = m_astroWidget->astroUpdate(QDateTime::currentDateTimeUtc (),
                                                   m_config.my_grid(), m_hisGrid,
                                                   m_freqNominal,
                                                   "Echo" == m_mode, m_transmitting,
                                                   !m_config.tx_QSY_allowed (), m_TRperiod);
      // no Doppler correction while CTRL pressed allows manual tuning
      if (Qt::ControlModifier & QApplication::queryKeyboardModifiers ()) return;

      // no Doppler correction in Tx if rig can't do it
      if (m_transmitting && !m_config.tx_QSY_allowed ()) return;
      if (!m_astroWidget->doppler_tracking ()) return;
      if ((m_monitoring || m_transmitting)
          // no Doppler correction below 6m
          && m_freqNominal >= 50000000
          && m_config.split_mode ())
        {
          // adjust for rig resolution
          if (m_config.transceiver_resolution () > 2)
            {
              correction.rx = (correction.rx + 50) / 100 * 100;
              correction.tx = (correction.tx + 50) / 100 * 100;
            }
          else if (m_config.transceiver_resolution () > 1)
            {
              correction.rx = (correction.rx + 10) / 20 * 20;
              correction.tx = (correction.tx + 10) / 20 * 20;
            }
          else if (m_config.transceiver_resolution () > 0)
            {
              correction.rx = (correction.rx + 5) / 10 * 10;
              correction.tx = (correction.tx + 5) / 10 * 10;
            }
          else if (m_config.transceiver_resolution () < -2)
            {
              correction.rx = correction.rx / 100 * 100;
              correction.tx = correction.tx / 100 * 100;
            }
          else if (m_config.transceiver_resolution () < -1)
            {
              correction.rx = correction.rx / 20 * 20;
              correction.tx = correction.tx / 20 * 20;
            }
          else if (m_config.transceiver_resolution () < 0)
            {
              correction.rx = correction.rx / 10 * 10;
              correction.tx = correction.tx / 10 * 10;
            }
          m_astroCorrection = correction;
        }
      else
        {
          m_astroCorrection = {};
        }

      setRig ();
    }
}

void MainWindow::setRig (Frequency f)
{
  if (f)
    {
      m_freqNominal = f;
      genCQMsg ();
      m_freqTxNominal = m_freqNominal;
      if (m_astroWidget) m_astroWidget->nominal_frequency (m_freqNominal, m_freqTxNominal);
    }
  if(m_transmitting && !m_config.tx_QSY_allowed ()) return;
  if ((m_monitoring || m_transmitting) && m_config.transceiver_online ())
    {
      if (m_transmitting && m_config.split_mode ())
        {
          Q_EMIT m_config.transceiver_tx_frequency (m_freqTxNominal + m_astroCorrection.tx);
        }
      else
        {
          Q_EMIT m_config.transceiver_frequency (m_freqNominal + m_astroCorrection.rx);
        }
    }
}

void MainWindow::fastPick(int x0, int x1, int y)
{
  float pixPerSecond=12000.0/512.0;
  if(m_TRperiod<30) pixPerSecond=12000.0/256.0;
  if(m_mode!="ISCAT" and m_mode!="MSK144") return;
  if(!m_decoderBusy) {
    dec_data.params.newdat=0;
    dec_data.params.nagain=1;
    m_blankLine=false;                 // don't insert the separator again
    m_nPick=1;
    if(y > 120) m_nPick=2;
    m_t0Pick=x0/pixPerSecond;
    m_t1Pick=x1/pixPerSecond;
    m_dataAvailable=true;
    decode();
  }
}

void MainWindow::on_actionMeasure_reference_spectrum_triggered()
{
  if(!m_monitoring) on_monitorButton_clicked (true);
  m_bRefSpec=true;
}

void MainWindow::on_actionMeasure_phase_response_triggered()
{
  if(m_bTrain) { 
    m_bTrain=false;
    MessageBox::information_message (this, tr ("Phase Training Disabled"));
  } else {
    m_bTrain=true;
    MessageBox::information_message (this, tr ("Phase Training Enabled"));
  }
}

void MainWindow::on_actionErase_reference_spectrum_triggered()
{
  m_bClearRefSpec=true;
}

void MainWindow::freqCalStep()
{
  if (++m_frequency_list_fcal_iter == m_config.frequencies ()->end ()) {
    m_frequency_list_fcal_iter = m_config.frequencies ()->begin ();
  }

  // allow for empty list
  if (m_frequency_list_fcal_iter != m_config.frequencies ()->end ()) {
    setRig (m_frequency_list_fcal_iter->frequency_ - ui->RxFreqSpinBox->value ());
  }
}

void MainWindow::on_sbCQTxFreq_valueChanged(int)
{
  setXIT (ui->TxFreqSpinBox->value ());
}

void MainWindow::on_cbCQTx_toggled(bool b)
{
  ui->sbCQTxFreq->setEnabled(b);
  genCQMsg();
  if(b) {
    ui->txrb6->setChecked(true);
    m_ntx=6;
  }
  setRig ();
  setXIT (ui->TxFreqSpinBox->value ());
}

void MainWindow::statusUpdate () const
{
  if (!ui) return;
  auto submode = current_submode ();
  m_messageClient->status_update (m_freqNominal, m_mode, m_hisCall,
                                  QString::number (ui->rptSpinBox->value ()),
                                  m_modeTx, ui->autoButton->isChecked (),
                                  m_transmitting, m_decoderBusy,
                                  ui->RxFreqSpinBox->value (), ui->TxFreqSpinBox->value (),
                                  m_config.my_callsign (), m_config.my_grid (),
                                  m_hisGrid, m_tx_watchdog,
                                  submode != QChar::Null ? QString {submode} : QString {}, m_bFastMode);
}

void MainWindow::childEvent (QChildEvent * e)
{
  if (e->child ()->isWidgetType ())
    {
      switch (e->type ())
        {
        case QEvent::ChildAdded: add_child_to_event_filter (e->child ()); break;
        case QEvent::ChildRemoved: remove_child_from_event_filter (e->child ()); break;
        default: break;
        }
    }
  QMainWindow::childEvent (e);
}

// add widget and any child widgets to our event filter so that we can
// take action on key press ad mouse press events anywhere in the main window
void MainWindow::add_child_to_event_filter (QObject * target)
{
  if (target && target->isWidgetType ())
    {
      target->installEventFilter (this);
    }
  auto const& children = target->children ();
  for (auto iter = children.begin (); iter != children.end (); ++iter)
    {
      add_child_to_event_filter (*iter);
    }
}

// recursively remove widget and any child widgets from our event filter
void MainWindow::remove_child_from_event_filter (QObject * target)
{
  auto const& children = target->children ();
  for (auto iter = children.begin (); iter != children.end (); ++iter)
    {
      remove_child_from_event_filter (*iter);
    }
  if (target && target->isWidgetType ())
    {
      target->removeEventFilter (this);
    }
}

void MainWindow::tx_watchdog (bool triggered)
{
  auto prior = m_tx_watchdog;
  m_tx_watchdog = triggered;
  if (triggered)
    {
      m_bTxTime=false;
      if (m_tune) stop_tuning ();
      if (m_auto) auto_tx_mode (false);
      tx_status_label.setStyleSheet ("QLabel{background-color: #ff0000}");
      tx_status_label.setText ("Runaway Tx watchdog");
      QApplication::alert (this);
    }
  else
    {
      m_idleMinutes = 0;
      update_watchdog_label ();
    }
  if (prior != triggered) statusUpdate ();
}

void MainWindow::update_watchdog_label ()
{
  if (m_config.watchdog () && !m_mode.startsWith ("WSPR"))
    {
      watchdog_label.setText (QString {"WD:%1m"}.arg (m_config.watchdog () - m_idleMinutes));
      watchdog_label.setVisible (true);
    }
  else
    {
      watchdog_label.setText (QString {});
      watchdog_label.setVisible (false);
    }
}