Massive UI revamping (v7): display channel absolute frequency in status bar. Manage shift frequency limits

plugins/channelrx/chanalyzer/chanalyzergui.cpp

@@ -99,6 +99,7 @@ void ChannelAnalyzerGUI::displaySettings()
     ui->rrcRolloffText->setText(rolloffStr);
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -233,6 +234,10 @@ bool ChannelAnalyzerGUI::handleMessage(const Message& message)
     {
         DSPSignalNotification& cmd = (DSPSignalNotification&) message;
         m_basebandSampleRate = cmd.getSampleRate();
+        m_deviceCenterFrequency = cmd.getCenterFrequency();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         qDebug("ChannelAnalyzerGUI::handleMessage: DSPSignalNotification: m_basebandSampleRate: %d", m_basebandSampleRate);
         setSinkSampleRate();
 
@@ -275,6 +280,7 @@ void ChannelAnalyzerGUI::channelMarkerChangedByCursor()
 {
     ui->deltaFrequency->setValue(m_channelMarker.getCenterFrequency());
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
 	applySettings();
 }
 
@@ -388,6 +394,7 @@ void ChannelAnalyzerGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -468,7 +475,6 @@ void ChannelAnalyzerGUI::onMenuDialogCalled(const QPoint& p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -703,3 +709,8 @@ void ChannelAnalyzerGUI::makeUIConnections()
     QObject::connect(ui->lowCut, &QSlider::valueChanged, this, &ChannelAnalyzerGUI::on_lowCut_valueChanged);
     QObject::connect(ui->ssb, &QCheckBox::toggled, this, &ChannelAnalyzerGUI::on_ssb_toggled);
 }
+
+void ChannelAnalyzerGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/chanalyzer/chanalyzergui.h

@@ -69,6 +69,7 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	ChannelAnalyzerSettings m_settings;
+    qint64 m_deviceCenterFrequency;
 	bool m_doApplySettings;
 	int m_basebandSampleRate; //!< sample rate after final in-channel decimation (spanlog2)
 	MovingAverageUtil<double, double, 40> m_channelPowerAvg;
@@ -93,6 +94,7 @@ private:
 	void setSpectrumDisplay();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodadsb/adsbdemodgui.cpp

@@ -2144,6 +2144,11 @@ if (DSPSignalNotification::match(message))
             ui->warning->setText("");
         }
         getRollupContents()->arrangeRollups();
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = sr;
+        ui->deltaFrequency->setValueRange(false, 7, -sr/2, sr/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(sr/2));
+        updateAbsoluteCenterFrequency();
         return true;
     }
     else if (ADSBDemodReport::MsgReportADSB::match(message))
@@ -2211,6 +2216,7 @@ void ADSBDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -2776,7 +2782,6 @@ void ADSBDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -3675,6 +3680,8 @@ ADSBDemodGUI::ADSBDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseb
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_basicSettingsShown(false),
     m_doApplySettings(true),
     m_tickCount(0),
@@ -4691,3 +4698,8 @@ void ADSBDemodGUI::makeUIConnections()
     QObject::connect(ui->logFilename, &QToolButton::clicked, this, &ADSBDemodGUI::on_logFilename_clicked);
     QObject::connect(ui->logOpen, &QToolButton::clicked, this, &ADSBDemodGUI::on_logOpen_clicked);
 }
+
+void ADSBDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodadsb/adsbdemodgui.h

@@ -785,6 +785,8 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     ADSBDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
     bool m_basicSettingsShown;
     bool m_doApplySettings;
 
@@ -848,6 +850,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void updatePosition(Aircraft *aircraft);
     bool updateLocalPosition(Aircraft *aircraft, double latitude, double longitude, bool surfacePosition);

plugins/channelrx/demodais/aisdemod.cpp

@@ -151,6 +151,10 @@ bool AISDemod::handleMessage(const Message& cmd)
         qDebug() << "AISDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
 
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
+
         return true;
     }
     else if (MsgMessage::match(cmd))

plugins/channelrx/demodais/aisdemodgui.cpp

@@ -217,6 +217,16 @@ bool AISDemodGUI::handleMessage(const Message& message)
         messageReceived(report.getMessage(), report.getDateTime());
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
 
     return false;
 }
@@ -250,6 +260,7 @@ void AISDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -426,6 +437,8 @@ AISDemodGUI::AISDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_doApplySettings(true),
     m_tickCount(0)
 {
@@ -617,6 +630,7 @@ void AISDemodGUI::displaySettings()
     filter();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -778,3 +792,8 @@ void AISDemodGUI::makeUIConnections()
     QObject::connect(ui->logFilename, &QToolButton::clicked, this, &AISDemodGUI::on_logFilename_clicked);
     QObject::connect(ui->logOpen, &QToolButton::clicked, this, &AISDemodGUI::on_logOpen_clicked);
 }
+
+void AISDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodais/aisdemodgui.h

@@ -78,6 +78,8 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     AISDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
     bool m_doApplySettings;
     ScopeVis* m_scopeVis;
 
@@ -98,6 +100,7 @@ private:
     void messageReceived(const QByteArray& message, const QDateTime& dateTime);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demodam/amdemod.cpp

@@ -167,6 +167,10 @@ bool AMDemod::handleMessage(const Message& cmd)
         qDebug() << "AMDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
 
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
+
 	    return true;
     }
     else if (MainCore::MsgChannelDemodQuery::match(cmd))

plugins/channelrx/demodam/amdemodgui.cpp

@@ -24,17 +24,17 @@
 
 #include "device/deviceuiset.h"
 #include "dsp/dspengine.h"
-#include "ui_amdemodgui.h"
+#include "dsp/dspcommands.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
 #include "util/db.h"
 #include "gui/basicchannelsettingsdialog.h"
 #include "gui/devicestreamselectiondialog.h"
-#include "dsp/dspengine.h"
 #include "gui/crightclickenabler.h"
 #include "gui/audioselectdialog.h"
 #include "maincore.h"
 
+#include "ui_amdemodgui.h"
 #include "amdemod.h"
 
 AMDemodGUI* AMDemodGUI::create(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandSampleSink *rxChannel)
@@ -85,6 +85,17 @@ bool AMDemodGUI::handleMessage(const Message& message)
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+
+        return true;
+    }
 
 	return false;
 }
@@ -118,6 +129,7 @@ void AMDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -199,7 +211,6 @@ void AMDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -238,6 +249,8 @@ AMDemodGUI::AMDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandS
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_doApplySettings(true),
 	m_squelchOpen(false),
     m_audioSampleRate(-1),
@@ -378,6 +391,7 @@ void AMDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -493,3 +507,8 @@ void AMDemodGUI::makeUIConnections()
     QObject::connect(ui->squelch, &QSlider::valueChanged, this, &AMDemodGUI::on_squelch_valueChanged);
     QObject::connect(ui->audioMute, &QToolButton::toggled, this, &AMDemodGUI::on_audioMute_toggled);
 }
+
+void AMDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodam/amdemodgui.h

@@ -51,6 +51,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	AMDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_doApplySettings;
 
 	AMDemod* m_amDemod;
@@ -72,6 +74,7 @@ private:
 	void displayStreamIndex();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodapt/aptdemod.cpp

@@ -209,8 +209,9 @@ bool APTDemod::handleMessage(const Message& cmd)
         qDebug() << "APTDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
         // Forward to GUI if any
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
             m_guiMessageQueue->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/demodapt/aptdemodgui.cpp

@@ -274,7 +274,11 @@ bool APTDemodGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         return true;
     }
 
@@ -310,6 +314,7 @@ void APTDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -592,6 +597,7 @@ APTDemodGUI::APTDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_tickCount(0),
     m_scene(nullptr),
@@ -779,6 +785,7 @@ void APTDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -912,3 +919,8 @@ void APTDemodGUI::makeUIConnections()
     QObject::connect(ui->zoomOut, &QToolButton::clicked, this, &APTDemodGUI::on_zoomOut_clicked);
     QObject::connect(ui->zoomAll, &ButtonSwitch::clicked, this, &APTDemodGUI::on_zoomAll_clicked);
 }
+
+void APTDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodapt/aptdemodgui.h

@@ -95,6 +95,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     APTDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
 
     APTDemod* m_aptDemod;
@@ -124,6 +125,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void deleteImageFromMap(const QString &name);
     void resetDecoder();

plugins/channelrx/demodatv/atvdemod.cpp

@@ -127,10 +127,8 @@ bool ATVDemod::handleMessage(const Message& cmd)
         m_basebandSink->getInputMessageQueue()->push(notifToSink);
 
         // Forward to GUI
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
-            DSPSignalNotification *notifToGUI = new DSPSignalNotification(notif);
-            getMessageQueueToGUI()->push(notifToGUI);
         }
 
         return true;

plugins/channelrx/demodatv/atvdemodgui.cpp

@@ -121,6 +121,7 @@ void ATVDemodGUI::displaySettings()
 
     applySampleRate();
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
 
     m_doApplySettings = true;
 }
@@ -168,6 +169,10 @@ bool ATVDemodGUI::handleMessage(const Message& message)
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
         m_basebandSampleRate = notif.getSampleRate();
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         applySampleRate();
 
         return true;
@@ -219,6 +224,7 @@ ATVDemodGUI::ATVDemodGUI(PluginAPI* objPluginAPI, DeviceUISet *deviceUISet, Base
         m_pluginAPI(objPluginAPI),
         m_deviceUISet(deviceUISet),
         m_channelMarker(this),
+        m_deviceCenterFrequency(0),
         m_doApplySettings(false),
         m_intTickCount(0),
         m_basebandSampleRate(48000)
@@ -499,6 +505,7 @@ void ATVDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_settings.m_inputFrequencyOffset = value;
     m_channelMarker.setCenterFrequency(value);
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -592,3 +599,8 @@ void ATVDemodGUI::makeUIConnections()
     QObject::connect(ui->amScaleOffset, &QDial::valueChanged, this, &ATVDemodGUI::on_amScaleOffset_valueChanged);
     QObject::connect(ui->screenTabWidget, &QTabWidget::currentChanged, this, &ATVDemodGUI::on_screenTabWidget_currentChanged);
 }
+
+void ATVDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodatv/atvdemodgui.h

@@ -71,6 +71,7 @@ private:
     RollupState m_rollupState;
     ATVDemod* m_atvDemod;
     ATVDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
 
     bool m_doApplySettings;
 
@@ -97,6 +98,7 @@ private:
     void topTimeUpdate();
     bool handleMessage(const Message& objMessage);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodbfm/bfmdemod.cpp

@@ -151,6 +151,10 @@ bool BFMDemod::handleMessage(const Message& cmd)
         qDebug() << "BFMDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
 
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
+
         return true;
     }
 	else

plugins/channelrx/demodbfm/bfmdemodgui.cpp

@@ -29,6 +29,7 @@
 
 #include "dsp/dspengine.h"
 #include "dsp/spectrumvis.h"
+#include "dsp/dspcommands.h"
 #include "gui/glspectrum.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
@@ -110,6 +111,16 @@ bool BFMDemodGUI::handleMessage(const Message& message)
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -145,6 +156,7 @@ void BFMDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -322,7 +334,6 @@ void BFMDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -361,6 +372,8 @@ BFMDemodGUI::BFMDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_rdsTimerCount(0),
     m_radiotext_AB_flag(false),
 	m_rate(625000)
@@ -483,6 +496,7 @@ void BFMDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -847,3 +861,8 @@ void BFMDemodGUI::makeUIConnections()
     QObject::connect(ui->rds, &ButtonSwitch::clicked, this, &BFMDemodGUI::on_rds_clicked);
     QObject::connect(ui->clearData, &QPushButton::clicked, this, &BFMDemodGUI::on_clearData_clicked);
 }
+
+void BFMDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodbfm/bfmdemodgui.h

@@ -68,6 +68,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	BFMDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_doApplySettings;
 	int m_rdsTimerCount;
     bool m_radiotext_AB_flag;
@@ -90,6 +92,7 @@ private:
 	void rdsUpdateFixedFields();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodchirpchat/chirpchatdemod.cpp

@@ -285,10 +285,8 @@ bool ChirpChatDemod::handleMessage(const Message& cmd)
         qDebug() << "ChirpChatDemod::handleMessage: DSPSignalNotification: m_basebandSampleRate: " << m_basebandSampleRate;
         m_basebandSink->getInputMessageQueue()->push(rep);
 
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif)); // make a copy
-            DSPSignalNotification* repToGUI = new DSPSignalNotification(notif); // make a copy
-            getMessageQueueToGUI()->push(repToGUI);
         }
 
         return true;

plugins/channelrx/demodchirpchat/chirpchatdemodgui.cpp

@@ -81,6 +81,7 @@ bool ChirpChatDemodGUI::handleMessage(const Message& message)
     if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         int basebandSampleRate = notif.getSampleRate();
         qDebug() << "ChirpChatDemodGUI::handleMessage: DSPSignalNotification: m_basebandSampleRate: " << basebandSampleRate;
 
@@ -90,6 +91,10 @@ bool ChirpChatDemodGUI::handleMessage(const Message& message)
             setBandwidths();
         }
 
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+
         return true;
     }
     else if (ChirpChatDemod::MsgReportDecodeBytes::match(message))
@@ -151,6 +156,7 @@ void ChirpChatDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -340,7 +346,6 @@ void ChirpChatDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -379,6 +384,7 @@ ChirpChatDemodGUI::ChirpChatDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUI
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_basebandSampleRate(250000),
 	m_doApplySettings(true),
     m_tickCount(0)
@@ -504,6 +510,7 @@ void ChirpChatDemodGUI::displaySettings()
     displaySquelch();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -793,3 +800,8 @@ void ChirpChatDemodGUI::makeUIConnections()
     QObject::connect(ui->udpAddress, &QLineEdit::editingFinished, this, &ChirpChatDemodGUI::on_udpAddress_editingFinished);
     QObject::connect(ui->udpPort, &QLineEdit::editingFinished, this, &ChirpChatDemodGUI::on_udpPort_editingFinished);
 }
+
+void ChirpChatDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodchirpchat/chirpchatdemodgui.h

@@ -97,6 +97,7 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	ChirpChatDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     int m_basebandSampleRate;
 	bool m_doApplySettings;
 
@@ -124,6 +125,7 @@ private:
     void resetLoRaStatus();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 };
 
 #endif // INCLUDE_CHIRPCHATDEMODGUI_H

plugins/channelrx/demoddab/dabdemod.cpp

@@ -162,10 +162,8 @@ bool DABDemod::handleMessage(const Message& cmd)
         qDebug() << "DABDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
         // Forward to GUI if any
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
-        {
+            m_guiMessageQueue->push(new DSPSignalNotification(notif));
-            rep = new DSPSignalNotification(notif);
-            m_guiMessageQueue->push(rep);
         }
 
         return true;

plugins/channelrx/demoddab/dabdemodgui.cpp

@@ -200,15 +200,22 @@ bool DABDemodGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
         bool srTooLow = m_basebandSampleRate < 2048000;
         ui->warning->setVisible(srTooLow);
+
         if (srTooLow) {
             ui->warning->setText("Sample rate must be >= 2048000");
         } else {
             ui->warning->setText("");
         }
+
         getRollupContents()->arrangeRollups();
+        updateAbsoluteCenterFrequency();
+
         return true;
     }
     else if (DABDemod::MsgDABEnsembleName::match(message))
@@ -318,6 +325,7 @@ void DABDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -439,6 +447,7 @@ DABDemodGUI::DABDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_tickCount(0),
     m_channelFreq(0.0)
@@ -574,6 +583,7 @@ void DABDemodGUI::displaySettings()
     filter();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -708,3 +718,8 @@ void DABDemodGUI::makeUIConnections()
     QObject::connect(ui->programs, &QTableWidget::cellDoubleClicked, this, &DABDemodGUI::on_programs_cellDoubleClicked);
     QObject::connect(ui->channel, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &DABDemodGUI::on_channel_currentIndexChanged);
 }
+
+void DABDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demoddab/dabdemodgui.h

@@ -73,6 +73,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     DABDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
 
     DABDemod* m_dabDemod;
@@ -93,6 +94,7 @@ private:
     void addProgramName(const DABDemod::MsgDABProgramName& program);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demoddatv/datvdemod.cpp

@@ -138,6 +138,11 @@ bool DATVDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* notifToSink = new DSPSignalNotification(notif); // make a copy
         m_basebandSink->getInputMessageQueue()->push(notifToSink);
 
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
+
         return true;
     }
 	else

plugins/channelrx/demoddatv/datvdemodgui.cpp

@@ -23,16 +23,17 @@
 
 #include "device/deviceuiset.h"
 #include "dsp/dspengine.h"
+#include "dsp/dspcommands.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
 #include "util/db.h"
-#include "ui_datvdemodgui.h"
 #include "gui/crightclickenabler.h"
 #include "gui/audioselectdialog.h"
 #include "gui/basicchannelsettingsdialog.h"
 #include "gui/devicestreamselectiondialog.h"
 #include "mainwindow.h"
 
+#include "ui_datvdemodgui.h"
 #include "datvdemodreport.h"
 #include "datvdvbs2ldpcdialog.h"
 #include "datvdemodgui.h"
@@ -100,6 +101,16 @@ bool DATVDemodGUI::handleMessage(const Message& message)
         displaySettings();
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -154,7 +165,6 @@ void DATVDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_centerFrequency = m_objChannelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_objChannelMarker.getColor().rgb();
         m_settings.m_title = m_objChannelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -193,6 +203,8 @@ DATVDemodGUI::DATVDemodGUI(PluginAPI* objPluginAPI, DeviceUISet *deviceUISet, Ba
     m_objPluginAPI(objPluginAPI),
     m_deviceUISet(deviceUISet),
     m_objChannelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_blnBasicSettingsShown(false),
     m_blnDoApplySettings(true),
     m_modcodModulationIndex(-1),
@@ -400,6 +412,7 @@ void DATVDemodGUI::displaySettings()
     }
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -779,6 +792,7 @@ void DATVDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_objChannelMarker.setCenterFrequency(value);
     m_settings.m_centerFrequency = m_objChannelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -952,3 +966,8 @@ void DATVDemodGUI::makeUIConnections()
     QObject::connect(ui->udpTSPort, &QLineEdit::editingFinished, this, &DATVDemodGUI::on_udpTSPort_editingFinished);
     QObject::connect(ui->playerEnable, &QCheckBox::clicked, this, &DATVDemodGUI::on_playerEnable_clicked);
 }
+
+void DATVDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_centerFrequency);
+}

plugins/channelrx/demoddatv/datvdemodgui.h

@@ -114,6 +114,8 @@ private:
     DATVDemod* m_datvDemod;
     MessageQueue m_inputMessageQueue;
     DATVDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 
     QTimer m_objTimer;
     qint64 m_intPreviousDecodedData;
@@ -146,6 +148,7 @@ private:
 	void enterEvent(QEvent*);
     bool handleMessage(const Message& objMessage);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 };
 
 #endif // INCLUDE_DATVDEMODGUI_H

plugins/channelrx/demoddsd/dsddemod.cpp

@@ -149,6 +149,10 @@ bool DSDDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "DSDDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
 	    return true;
     }

plugins/channelrx/demoddsd/dsddemodgui.cpp

@@ -22,6 +22,7 @@
 
 #include "ui_dsddemodgui.h"
 #include "dsp/scopevisxy.h"
+#include "dsp/dspcommands.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
 #include "util/db.h"
@@ -94,6 +95,16 @@ bool DSDDemodGUI::handleMessage(const Message& message)
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -117,6 +128,7 @@ void DSDDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -266,7 +278,6 @@ void DSDDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -311,6 +322,8 @@ DSDDemodGUI::DSDDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_doApplySettings(true),
 	m_enableCosineFiltering(false),
 	m_syncOrConstellation(false),
@@ -468,6 +481,7 @@ void DSDDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -640,3 +654,8 @@ void DSDDemodGUI::makeUIConnections()
     QObject::connect(ui->symbolPLLLock, &QToolButton::toggled, this, &DSDDemodGUI::on_symbolPLLLock_toggled);
     QObject::connect(ui->viewStatusLog, &QPushButton::clicked, this, &DSDDemodGUI::on_viewStatusLog_clicked);
 }
+
+void DSDDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demoddsd/dsddemodgui.h

@@ -81,6 +81,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	DSDDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_doApplySettings;
 
     ScopeVisXY* m_scopeVisXY;
@@ -113,6 +115,7 @@ private:
 	void updateMyPosition();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodfreedv/freedvdemod.cpp

@@ -151,6 +151,10 @@ bool FreeDVDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "FreeDVDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/demodfreedv/freedvdemodgui.cpp

@@ -95,6 +95,16 @@ bool FreeDVDemodGUI::handleMessage(const Message& message)
         applyBandwidths(5 - ui->spanLog2->value()); // will update spectrum details with new sample rate
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -130,6 +140,7 @@ void FreeDVDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -199,7 +210,6 @@ void FreeDVDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -247,6 +257,8 @@ FreeDVDemodGUI::FreeDVDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, B
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_doApplySettings(true),
     m_spectrumRate(6000),
 	m_audioBinaural(false),
@@ -398,6 +410,7 @@ void FreeDVDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -502,3 +515,8 @@ void FreeDVDemodGUI::makeUIConnections()
     QObject::connect(ui->agc, &ButtonSwitch::toggled, this, &FreeDVDemodGUI::on_agc_toggled);
     QObject::connect(ui->audioMute, &QToolButton::toggled, this, &FreeDVDemodGUI::on_audioMute_toggled);
 }
+
+void FreeDVDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodfreedv/freedvdemodgui.h

@@ -70,6 +70,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	FreeDVDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_doApplySettings;
     int m_spectrumRate;
 	bool m_audioBinaural;
@@ -97,6 +99,7 @@ private:
     void displayStreamIndex();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodnfm/nfmdemod.cpp

@@ -151,6 +151,10 @@ bool NFMDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "NFMDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
 	    return true;
 	}

plugins/channelrx/demodnfm/nfmdemodgui.cpp

@@ -13,6 +13,7 @@
 #include "gui/audioselectdialog.h"
 #include "dsp/dspengine.h"
 #include "dsp/dcscodes.h"
+#include "dsp/dspcommands.h"
 #include "maincore.h"
 
 #include "nfmdemodreport.h"
@@ -80,6 +81,16 @@ bool NFMDemodGUI::handleMessage(const Message& message)
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
 
     return false;
 }
@@ -113,6 +124,7 @@ void NFMDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -297,7 +309,6 @@ void NFMDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -336,6 +347,8 @@ NFMDemodGUI::NFMDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_basicSettingsShown(false),
 	m_doApplySettings(true),
 	m_squelchOpen(false),
@@ -514,6 +527,7 @@ void NFMDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -634,3 +648,8 @@ void NFMDemodGUI::makeUIConnections()
     QObject::connect(ui->highPassFilter, &ButtonSwitch::toggled, this, &NFMDemodGUI::on_highPassFilter_toggled);
     QObject::connect(ui->audioMute, &QToolButton::toggled, this, &NFMDemodGUI::on_audioMute_toggled);
 }
+
+void NFMDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodnfm/nfmdemodgui.h

@@ -50,6 +50,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	NFMDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_basicSettingsShown;
 	bool m_doApplySettings;
 
@@ -72,6 +74,7 @@ private:
 	void setDcsCode(unsigned int dcsCode);
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodpacket/packetdemod.cpp

@@ -153,10 +153,8 @@ bool PacketDemod::handleMessage(const Message& cmd)
         qDebug() << "PacketDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
         // Forward to GUI if any
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
-        {
+            m_guiMessageQueue->push(new DSPSignalNotification(notif));
-            rep = new DSPSignalNotification(notif);
-            m_guiMessageQueue->push(rep);
         }
 
         return true;

plugins/channelrx/demodpacket/packetdemodgui.cpp

@@ -218,7 +218,11 @@ bool PacketDemodGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         return true;
     }
     else if (MainCore::MsgPacket::match(message))
@@ -260,6 +264,7 @@ void PacketDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -424,6 +429,7 @@ PacketDemodGUI::PacketDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, B
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_tickCount(0)
 {
@@ -558,6 +564,7 @@ void PacketDemodGUI::displaySettings()
     filter();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -704,3 +711,8 @@ void PacketDemodGUI::makeUIConnections()
     QObject::connect(ui->logFilename, &QToolButton::clicked, this, &PacketDemodGUI::on_logFilename_clicked);
     QObject::connect(ui->logOpen, &QToolButton::clicked, this, &PacketDemodGUI::on_logOpen_clicked);
 }
+
+void PacketDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodpacket/packetdemodgui.h

@@ -78,6 +78,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     PacketDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
 
     PacketDemod* m_packetDemod;
@@ -97,6 +98,7 @@ private:
     void packetReceived(QByteArray packet);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demodpager/pagerdemod.cpp

@@ -145,6 +145,10 @@ bool PagerDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "PagerDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/demodpager/pagerdemodgui.cpp

@@ -277,6 +277,16 @@ bool PagerDemodGUI::handleMessage(const Message& message)
             report.getEvenParityErrors(), report.getBCHParityErrors());
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
 
     return false;
 }
@@ -310,6 +320,7 @@ void PagerDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -475,6 +486,8 @@ PagerDemodGUI::PagerDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Bas
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_doApplySettings(true),
     m_tickCount(0)
 {
@@ -650,6 +663,7 @@ void PagerDemodGUI::displaySettings()
     filter();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -819,3 +833,8 @@ void PagerDemodGUI::makeUIConnections()
     QObject::connect(ui->logFilename, &QToolButton::clicked, this, &PagerDemodGUI::on_logFilename_clicked);
     QObject::connect(ui->logOpen, &QToolButton::clicked, this, &PagerDemodGUI::on_logOpen_clicked);
 }
+
+void PagerDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodpager/pagerdemodgui.h

@@ -72,6 +72,8 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     PagerDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
     bool m_doApplySettings;
     ScopeVis* m_scopeVis;
 
@@ -93,6 +95,7 @@ private:
         int evenParityErrors, int bchParityErrors);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demodradiosonde/radiosondedemod.cpp

@@ -149,6 +149,10 @@ bool RadiosondeDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "RadiosondeDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/demodradiosonde/radiosondedemodgui.cpp

@@ -324,6 +324,16 @@ bool RadiosondeDemodGUI::handleMessage(const Message& frame)
         frameReceived(report.getMessage(), report.getDateTime(), report.getErrorsCorrected(), report.getThreshold());
         return true;
     }
+    else if (DSPSignalNotification::match(frame))
+    {
+        const DSPSignalNotification& notif = (const DSPSignalNotification&) frame;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
 
     return false;
 }
@@ -357,6 +367,7 @@ void RadiosondeDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -532,6 +543,8 @@ RadiosondeDemodGUI::RadiosondeDemodGUI(PluginAPI* pluginAPI, DeviceUISet *device
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_doApplySettings(true),
     m_tickCount(0)
 {
@@ -754,6 +767,7 @@ void RadiosondeDemodGUI::displaySettings()
     filter();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -914,3 +928,8 @@ void RadiosondeDemodGUI::makeUIConnections()
     QObject::connect(ui->logFilename, &QToolButton::clicked, this, &RadiosondeDemodGUI::on_logFilename_clicked);
     QObject::connect(ui->logOpen, &QToolButton::clicked, this, &RadiosondeDemodGUI::on_logOpen_clicked);
 }
+
+void RadiosondeDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodradiosonde/radiosondedemodgui.h

@@ -74,6 +74,8 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     RadiosondeDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
     bool m_doApplySettings;
     ScopeVis* m_scopeVis;
 
@@ -96,6 +98,7 @@ private:
     void frameReceived(const QByteArray& frame, const QDateTime& dateTime, int errorsCorrected, int threshold);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demodssb/ssbdemod.cpp

@@ -145,6 +145,10 @@ bool SSBDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "SSBDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forwatd to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/demodssb/ssbdemodgui.cpp

@@ -84,6 +84,16 @@ bool SSBDemodGUI::handleMessage(const Message& message)
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        const DSPSignalNotification& notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -139,6 +149,7 @@ void SSBDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -239,7 +250,6 @@ void SSBDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -287,6 +297,8 @@ SSBDemodGUI::SSBDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_doApplySettings(true),
     m_spectrumRate(6000),
 	m_audioBinaural(false),
@@ -581,6 +593,7 @@ void SSBDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -696,3 +709,8 @@ void SSBDemodGUI::makeUIConnections()
     QObject::connect(ui->spanLog2, &QSlider::valueChanged, this, &SSBDemodGUI::on_spanLog2_valueChanged);
     QObject::connect(ui->flipSidebands, &QPushButton::clicked, this, &SSBDemodGUI::on_flipSidebands_clicked);
 }
+
+void SSBDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodssb/ssbdemodgui.h

@@ -53,6 +53,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	SSBDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_doApplySettings;
     int m_spectrumRate;
 	bool m_audioBinaural;
@@ -82,6 +84,7 @@ private:
     void displayAGCThresholdGate(int value);
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/demodvor/vordemod.cpp

@@ -150,10 +150,8 @@ bool VORDemod::handleMessage(const Message& cmd)
         qDebug() << "VORDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
         // Forward to GUI if any
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
-        {
+            m_guiMessageQueue->push(new DSPSignalNotification(notif));
-            rep = new DSPSignalNotification(notif);
-            m_guiMessageQueue->push(rep);
         }
 
         return true;

plugins/channelrx/demodvor/vordemodgui.cpp

@@ -764,7 +764,9 @@ bool VORDemodGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        updateAbsoluteCenterFrequency();
         return true;
     }
     else if (VORDemodReport::MsgReportRadial::match(message))
@@ -1160,6 +1162,7 @@ VORDemodGUI::VORDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_squelchOpen(false),
     m_tickCount(0),
@@ -1441,3 +1444,8 @@ void VORDemodGUI::makeUIConnections()
     QObject::connect(ui->getOpenAIPVORDB, &QPushButton::clicked, this, &VORDemodGUI::on_getOpenAIPVORDB_clicked);
     QObject::connect(ui->magDecAdjust, &QPushButton::clicked, this, &VORDemodGUI::on_magDecAdjust_clicked);
 }
+
+void VORDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency);
+}

plugins/channelrx/demodvor/vordemodgui.h

@@ -236,6 +236,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     VORDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
 
     VORDemod* m_vorDemod;
@@ -263,6 +264,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demodvorsc/vordemodsc.cpp

@@ -152,10 +152,8 @@ bool VORDemodSC::handleMessage(const Message& cmd)
         qDebug() << "VORDemodSC::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
         // Forward to GUI if any
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
-        {
+            m_guiMessageQueue->push(new DSPSignalNotification(notif));
-            rep = new DSPSignalNotification(notif);
-            m_guiMessageQueue->push(rep);
         }
 
         return true;

plugins/channelrx/demodvorsc/vordemodscgui.cpp

@@ -91,7 +91,11 @@ bool VORDemodSCGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         return true;
     }
     else if (VORDemodSCReport::MsgReportRadial::match(message))
@@ -188,6 +192,7 @@ void VORDemodSCGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -277,6 +282,7 @@ VORDemodSCGUI::VORDemodSCGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Bas
     ui(new Ui::VORDemodSCGUI),
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
+    m_deviceCenterFrequency(0),
     m_channelMarker(this),
     m_doApplySettings(true),
     m_squelchOpen(false),
@@ -377,6 +383,7 @@ void VORDemodSCGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -456,3 +463,8 @@ void VORDemodSCGUI::makeUIConnections()
     QObject::connect(ui->squelch, &QDial::valueChanged, this, &VORDemodSCGUI::on_squelch_valueChanged);
     QObject::connect(ui->audioMute, &QToolButton::toggled, this, &VORDemodSCGUI::on_audioMute_toggled);
 }
+
+void VORDemodSCGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodvorsc/vordemodscgui.h

@@ -68,6 +68,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     VORDemodSCSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
 
     VORDemodSC* m_vorDemod;
@@ -85,6 +86,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/demodwfm/wfmdemod.cpp

@@ -148,6 +148,10 @@ bool WFMDemod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "WFMDemod::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forwatd to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/demodwfm/wfmdemodgui.cpp

@@ -8,6 +8,7 @@
 
 #include "ui_wfmdemodgui.h"
 #include "dsp/dspengine.h"
+#include "dsp/dspcommands.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
 #include "util/db.h"
@@ -56,7 +57,6 @@ bool WFMDemodGUI::deserialize(const QByteArray& data)
 
 bool WFMDemodGUI::handleMessage(const Message& message)
 {
-    (void) message;
     if (WFMDemod::MsgConfigureWFMDemod::match(message))
     {
         qDebug("WFMDemodGUI::handleMessage: WFMDemod::MsgConfigureWFMDemod");
@@ -67,6 +67,16 @@ bool WFMDemodGUI::handleMessage(const Message& message)
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        const DSPSignalNotification& notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -102,6 +112,7 @@ void WFMDemodGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -162,7 +173,6 @@ void WFMDemodGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -201,6 +211,8 @@ WFMDemodGUI::WFMDemodGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_basicSettingsShown(false),
     m_squelchOpen(false),
     m_audioSampleRate(-1)
@@ -299,6 +311,7 @@ void WFMDemodGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -375,3 +388,8 @@ void WFMDemodGUI::makeUIConnections()
     QObject::connect(ui->squelch, &QSlider::valueChanged, this, &WFMDemodGUI::on_squelch_valueChanged);
     QObject::connect(ui->audioMute, &QToolButton::toggled, this, &WFMDemodGUI::on_audioMute_toggled);
 }
+
+void WFMDemodGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/demodwfm/wfmdemodgui.h

@@ -48,6 +48,8 @@ private:
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	WFMDemodSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	bool m_basicSettingsShown;
 	bool m_doApplySettings;
     bool m_audioMute;
@@ -66,6 +68,7 @@ private:
 	void displayStreamIndex();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/filesink/filesink.cpp

@@ -170,10 +170,8 @@ bool FileSink::handleMessage(const Message& cmd)
         DSPSignalNotification *notif = new DSPSignalNotification(cfg);
         m_basebandSink->getInputMessageQueue()->push(notif);
 
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(cfg));
-            DSPSignalNotification *notifToGUI = new DSPSignalNotification(cfg);
-            getMessageQueueToGUI()->push(notifToGUI);
         }
 
         return true;

plugins/channelrx/filesink/filesinkgui.cpp

@@ -76,7 +76,11 @@ bool FileSinkGUI::handleMessage(const Message& message)
     if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         displayRate();
 
         if (m_fixedPosition)
@@ -178,6 +182,7 @@ FileSinkGUI::FileSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseban
         m_pluginAPI(pluginAPI),
         m_deviceUISet(deviceUISet),
         m_channelMarker(this),
+        m_deviceCenterFrequency(0),
         m_running(false),
         m_fixedShiftIndex(0),
         m_basebandSampleRate(0),
@@ -284,6 +289,7 @@ void FileSinkGUI::displaySettings()
     setPosFromFrequency();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -410,6 +416,7 @@ void FileSinkGUI::on_deltaFrequency_changed(qint64 value)
     {
         m_channelMarker.setCenterFrequency(value);
         m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+        updateAbsoluteCenterFrequency();
         setPosFromFrequency();
         applySettings();
     }
@@ -542,6 +549,7 @@ void FileSinkGUI::setFrequencyFromPos()
     m_channelMarker.setCenterFrequency(inputFrequencyOffset);
     ui->deltaFrequency->setValue(m_channelMarker.getCenterFrequency());
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
 }
 
 void FileSinkGUI::setPosFromFrequency()
@@ -609,3 +617,8 @@ void FileSinkGUI::makeUIConnections()
     QObject::connect(ui->record, &ButtonSwitch::toggled, this, &FileSinkGUI::on_record_toggled);
     QObject::connect(ui->showFileDialog, &QPushButton::clicked, this, &FileSinkGUI::on_showFileDialog_clicked);
 }
+
+void FileSinkGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/filesink/filesinkgui.h

@@ -69,6 +69,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     FileSinkSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_running;
     int m_fixedShiftIndex;
     int m_basebandSampleRate;
@@ -97,6 +98,7 @@ private:
     QString displayScaled(uint64_t value, int precision);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/freqtracker/freqtracker.cpp

@@ -142,10 +142,8 @@ bool FreqTracker::handleMessage(const Message& cmd)
         qDebug() << "FreqTracker::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
 
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
-            DSPSignalNotification *msg = new DSPSignalNotification(notif);
-            getMessageQueueToGUI()->push(msg);
         }
 
         return true;

plugins/channelrx/freqtracker/freqtrackergui.cpp

@@ -90,7 +90,11 @@ bool FreqTrackerGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& cfg = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = cfg.getCenterFrequency();
         m_basebandSampleRate = cfg.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         int sinkSampleRate = m_basebandSampleRate / (1<<m_settings.m_log2Decim);
         ui->channelSampleRateText->setText(tr("%1k").arg(QString::number(sinkSampleRate / 1000.0f, 'g', 5)));
         displaySpectrumBandwidth(m_settings.m_spanLog2);
@@ -147,6 +151,7 @@ void FreqTrackerGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -268,7 +273,6 @@ void FreqTrackerGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -308,6 +312,7 @@ FreqTrackerGUI::FreqTrackerGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, B
 	m_deviceUISet(deviceUISet),
 	m_channelMarker(this),
     m_pllChannelMarker(this),
+    m_deviceCenterFrequency(0),
     m_basebandSampleRate(0),
 	m_doApplySettings(true),
 	m_squelchOpen(false),
@@ -438,6 +443,7 @@ void FreqTrackerGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -535,3 +541,8 @@ void FreqTrackerGUI::makeUIConnections()
     QObject::connect(ui->squelch, &QSlider::valueChanged, this, &FreqTrackerGUI::on_squelch_valueChanged);
     QObject::connect(ui->squelchGate, &QDial::valueChanged, this, &FreqTrackerGUI::on_squelchGate_valueChanged);
 }
+
+void FreqTrackerGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/freqtracker/freqtrackergui.h

@@ -70,6 +70,7 @@ private:
 	ChannelMarker m_pllChannelMarker;
 	RollupState m_rollupState;
 	FreqTrackerSettings m_settings;
+    qint64 m_deviceCenterFrequency;
 	int m_basebandSampleRate;
 	bool m_doApplySettings;
 
@@ -90,6 +91,7 @@ private:
     void displayStreamIndex();
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channelrx/localsink/localsink.cpp

@@ -41,7 +41,6 @@
 #include "localsink.h"
 
 MESSAGE_CLASS_DEFINITION(LocalSink::MsgConfigureLocalSink, Message)
-MESSAGE_CLASS_DEFINITION(LocalSink::MsgBasebandSampleRateNotification, Message)
 
 const char* const LocalSink::m_channelIdURI = "sdrangel.channel.localsink";
 const char* const LocalSink::m_channelId = "LocalSink";
@@ -138,10 +137,8 @@ bool LocalSink::handleMessage(const Message& cmd)
         DSPSignalNotification *msg = new DSPSignalNotification(notif.getSampleRate(), notif.getCenterFrequency());
         m_basebandSink->getInputMessageQueue()->push(msg);
 
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
-            MsgBasebandSampleRateNotification *msg = MsgBasebandSampleRateNotification::create(notif.getSampleRate());
-            getMessageQueueToGUI()->push(msg);
         }
 
         return true;

plugins/channelrx/localsink/localsink.h

@@ -61,26 +61,6 @@ public:
         { }
     };
 
-    class MsgBasebandSampleRateNotification : public Message {
-        MESSAGE_CLASS_DECLARATION
-
-    public:
-        static MsgBasebandSampleRateNotification* create(int sampleRate) {
-            return new MsgBasebandSampleRateNotification(sampleRate);
-        }
-
-        int getSampleRate() const { return m_sampleRate; }
-
-    private:
-
-        MsgBasebandSampleRateNotification(int sampleRate) :
-            Message(),
-            m_sampleRate(sampleRate)
-        { }
-
-        int m_sampleRate;
-    };
-
     LocalSink(DeviceAPI *deviceAPI);
     virtual ~LocalSink();
     virtual void destroy() { delete this; }

plugins/channelrx/localsink/localsinkgui.cpp

@@ -21,6 +21,7 @@
 #include "gui/basicchannelsettingsdialog.h"
 #include "gui/devicestreamselectiondialog.h"
 #include "dsp/hbfilterchainconverter.h"
+#include "dsp/dspcommands.h"
 #include "mainwindow.h"
 
 #include "localsinkgui.h"
@@ -69,11 +70,13 @@ bool LocalSinkGUI::deserialize(const QByteArray& data)
 
 bool LocalSinkGUI::handleMessage(const Message& message)
 {
-    if (LocalSink::MsgBasebandSampleRateNotification::match(message))
+    if (DSPSignalNotification::match(message))
     {
-        LocalSink::MsgBasebandSampleRateNotification& notif = (LocalSink::MsgBasebandSampleRateNotification&) message;
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
         //m_channelMarker.setBandwidth(notif.getSampleRate());
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        updateAbsoluteCenterFrequency();
         displayRateAndShift();
         return true;
     }
@@ -98,6 +101,7 @@ LocalSinkGUI::LocalSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseb
         ui(new Ui::LocalSinkGUI),
         m_pluginAPI(pluginAPI),
         m_deviceUISet(deviceUISet),
+        m_deviceCenterFrequency(0),
         m_basebandSampleRate(0),
         m_tickCount(0)
 {
@@ -363,6 +367,7 @@ void LocalSinkGUI::applyPosition()
     m_shiftFrequencyFactor = HBFilterChainConverter::convertToString(m_settings.m_log2Decim, m_settings.m_filterChainHash, s);
     ui->filterChainText->setText(s);
 
+    updateAbsoluteCenterFrequency();
     displayRateAndShift();
     applySettings();
 }
@@ -382,3 +387,9 @@ void LocalSinkGUI::makeUIConnections()
     QObject::connect(ui->localDevicesRefresh, &QPushButton::clicked, this, &LocalSinkGUI::on_localDevicesRefresh_clicked);
     QObject::connect(ui->localDevicePlay, &ButtonSwitch::toggled, this, &LocalSinkGUI::on_localDevicePlay_toggled);
 }
+
+void LocalSinkGUI::updateAbsoluteCenterFrequency()
+{
+    int shift = m_shiftFrequencyFactor * m_basebandSampleRate;
+    setStatusFrequency(m_deviceCenterFrequency + shift);
+}

plugins/channelrx/localsink/localsinkgui.h

@@ -64,6 +64,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     LocalSinkSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     int m_basebandSampleRate;
     double m_shiftFrequencyFactor; //!< Channel frequency shift factor
     bool m_doApplySettings;
@@ -85,6 +86,7 @@ private:
     int getLocalDeviceIndexInCombo(int localDeviceIndex);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/noisefigure/noisefigure.cpp

@@ -445,10 +445,8 @@ bool NoiseFigure::handleMessage(const Message& cmd)
         qDebug() << "NoiseFigure::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
         // Forward to GUI if any
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
-        {
+            m_guiMessageQueue->push(new DSPSignalNotification(notif));
-            rep = new DSPSignalNotification(notif);
-            m_guiMessageQueue->push(rep);
         }
 
         return true;

plugins/channelrx/noisefigure/noisefiguregui.cpp

@@ -269,7 +269,11 @@ bool NoiseFigureGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getSampleRate();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         updateBW();
         return true;
     }
@@ -323,6 +327,7 @@ void NoiseFigureGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -587,6 +592,7 @@ NoiseFigureGUI::NoiseFigureGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, B
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_basebandSampleRate(1000000),
     m_tickCount(0),
@@ -747,6 +753,7 @@ void NoiseFigureGUI::displaySettings()
     }
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -810,3 +817,8 @@ void NoiseFigureGUI::makeUIConnections()
     QObject::connect(ui->openReference, &QToolButton::clicked, this, &NoiseFigureGUI::on_openReference_clicked);
     QObject::connect(ui->clearReference, &QToolButton::clicked, this, &NoiseFigureGUI::on_clearReference_clicked);
 }
+
+void NoiseFigureGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/noisefigure/noisefiguregui.h

@@ -75,6 +75,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     NoiseFigureSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
 
     NoiseFigure* m_noiseFigure;
@@ -101,6 +102,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/radioastronomy/radioastronomygui.cpp

@@ -973,10 +973,16 @@ bool RadioAstronomyGUI::handleMessage(const Message& message)
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
         m_basebandSampleRate = notif.getSampleRate();
         m_centerFrequency = notif.getCenterFrequency();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+
         if (m_settings.m_tempGalLink) {
             calcGalacticBackgroundTemp();
         }
+
         updateTSys0();
+
         return true;
     }
     else if (RadioAstronomy::MsgReportAvailableFeatures::match(message))
@@ -1199,6 +1205,7 @@ void RadioAstronomyGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -1997,6 +2004,7 @@ RadioAstronomyGUI::RadioAstronomyGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUI
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_basebandSampleRate(0),
     m_centerFrequency(0),
@@ -2555,6 +2563,7 @@ void RadioAstronomyGUI::displaySettings()
     }
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
     getRollupContents()->arrangeRollups();
 }
@@ -6145,3 +6154,8 @@ void RadioAstronomyGUI::makeUIConnections()
     QObject::connect(ui->powerColourPalette, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &RadioAstronomyGUI::on_powerColourPalette_currentIndexChanged);
     QObject::connect(ui->powerTable, &QTableWidget::cellDoubleClicked, this, &RadioAstronomyGUI::on_powerTable_cellDoubleClicked);
 }
+
+void RadioAstronomyGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/radioastronomy/radioastronomygui.h

@@ -218,6 +218,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     RadioAstronomySettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
     QList<RadioAstronomySettings::AvailableFeature> m_availableFeatures;
 
@@ -333,6 +334,7 @@ private:
     void updateRotatorList(const QList<RadioAstronomySettings::AvailableFeature>& rotators);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     double degreesToSteradian(double deg) const;
     double hpbwToSteradians(double hpbw) const;

plugins/channelrx/radioclock/radioclock.cpp

@@ -165,6 +165,10 @@ bool RadioClock::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "RadioClock::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/radioclock/radioclockgui.cpp

@@ -132,6 +132,16 @@ bool RadioClockGUI::handleMessage(const Message& message)
         ui->status->setText(report.getStatus());
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        const DSPSignalNotification& notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
 
     return false;
 }
@@ -165,6 +175,7 @@ void RadioClockGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -266,6 +277,8 @@ RadioClockGUI::RadioClockGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Bas
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_doApplySettings(true),
     m_tickCount(0)
 {
@@ -372,6 +385,7 @@ void RadioClockGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -422,3 +436,8 @@ void RadioClockGUI::makeUIConnections()
     QObject::connect(ui->modulation, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &RadioClockGUI::on_modulation_currentIndexChanged);
     QObject::connect(ui->timezone, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &RadioClockGUI::on_timezone_currentIndexChanged);
 }
+
+void RadioClockGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/radioclock/radioclockgui.h

@@ -71,6 +71,8 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     RadioClockSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
     bool m_doApplySettings;
     ScopeVis* m_scopeVis;
 
@@ -89,6 +91,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void displayDateTime();
 

plugins/channelrx/remotesink/remotesink.cpp

@@ -155,10 +155,8 @@ bool RemoteSink::handleMessage(const Message& cmd)
         m_basebandSink->getInputMessageQueue()->push(msgToBaseband);
 
         // Forward to the GUI
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
-            DSPSignalNotification* msgToGUI = new DSPSignalNotification(notif); // make a copy
-            getMessageQueueToGUI()->push(msgToGUI);
         }
 
 	    return true;

plugins/channelrx/remotesink/remotesinkgui.cpp

@@ -79,6 +79,7 @@ bool RemoteSinkGUI::handleMessage(const Message& message)
     else if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& cfg = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = cfg.getCenterFrequency();
         m_basebandSampleRate = cfg.getSampleRate();
         qDebug("RemoteSinkGUI::handleMessage: DSPSignalNotification: m_basebandSampleRate: %d", m_basebandSampleRate);
         displayRateAndShift();
@@ -97,6 +98,7 @@ RemoteSinkGUI::RemoteSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Bas
         m_pluginAPI(pluginAPI),
         m_deviceUISet(deviceUISet),
         m_basebandSampleRate(0),
+        m_deviceCenterFrequency(0),
         m_tickCount(0)
 {
     ui->setupUi(getRollupContents());
@@ -176,6 +178,7 @@ void RemoteSinkGUI::displaySettings()
     applyDecimation();
     displayStreamIndex();
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -366,6 +369,7 @@ void RemoteSinkGUI::applyPosition()
     m_shiftFrequencyFactor = HBFilterChainConverter::convertToString(m_settings.m_log2Decim, m_settings.m_filterChainHash, s);
     ui->filterChainText->setText(s);
 
+    updateAbsoluteCenterFrequency();
     displayRateAndShift();
     applySettings();
 }
@@ -387,3 +391,9 @@ void RemoteSinkGUI::makeUIConnections()
     QObject::connect(ui->nbFECBlocks, &QDial::valueChanged, this, &RemoteSinkGUI::on_nbFECBlocks_valueChanged);
     QObject::connect(ui->nbTxBytes, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &RemoteSinkGUI::on_nbTxBytes_currentIndexChanged);
 }
+
+void RemoteSinkGUI::updateAbsoluteCenterFrequency()
+{
+    int shift = m_shiftFrequencyFactor * m_basebandSampleRate;
+    setStatusFrequency(m_deviceCenterFrequency + shift);
+}

plugins/channelrx/remotesink/remotesinkgui.h

@@ -84,6 +84,7 @@ private:
     void displayRateAndShift();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/sigmffilesink/sigmffilesink.cpp

@@ -170,10 +170,8 @@ bool SigMFFileSink::handleMessage(const Message& cmd)
         DSPSignalNotification *notif = new DSPSignalNotification(cfg);
         m_basebandSink->getInputMessageQueue()->push(notif);
 
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(cfg));
-            DSPSignalNotification *notifToGUI = new DSPSignalNotification(cfg);
-            getMessageQueueToGUI()->push(notifToGUI);
         }
 
         return true;

plugins/channelrx/sigmffilesink/sigmffilesinkgui.cpp

@@ -75,7 +75,10 @@ bool SigMFFileSinkGUI::handleMessage(const Message& message)
     if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
         displayRate();
 
         if (m_fixedPosition)
@@ -165,6 +168,7 @@ SigMFFileSinkGUI::SigMFFileSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISe
         m_pluginAPI(pluginAPI),
         m_deviceUISet(deviceUISet),
         m_channelMarker(this),
+        m_deviceCenterFrequency(0),
         m_running(false),
         m_fixedShiftIndex(0),
         m_basebandSampleRate(0),
@@ -277,6 +281,7 @@ void SigMFFileSinkGUI::displaySettings()
     setPosFromFrequency();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -403,6 +408,7 @@ void SigMFFileSinkGUI::on_deltaFrequency_changed(qint64 value)
     {
         m_channelMarker.setCenterFrequency(value);
         m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+        updateAbsoluteCenterFrequency();
         setPosFromFrequency();
         applySettings();
     }
@@ -537,6 +543,7 @@ void SigMFFileSinkGUI::setFrequencyFromPos()
     m_channelMarker.setCenterFrequency(inputFrequencyOffset);
     ui->deltaFrequency->setValue(m_channelMarker.getCenterFrequency());
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
 }
 
 void SigMFFileSinkGUI::setPosFromFrequency()
@@ -604,3 +611,8 @@ void SigMFFileSinkGUI::makeUIConnections()
     QObject::connect(ui->record, &ButtonSwitch::toggled, this, &SigMFFileSinkGUI::on_record_toggled);
     QObject::connect(ui->showFileDialog, &QPushButton::clicked, this, &SigMFFileSinkGUI::on_showFileDialog_clicked);
 }
+
+void SigMFFileSinkGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/sigmffilesink/sigmffilesinkgui.h

@@ -69,6 +69,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     SigMFFileSinkSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_running;
     int m_fixedShiftIndex;
     int m_basebandSampleRate;
@@ -97,6 +98,7 @@ private:
     QString displayScaled(uint64_t value, int precision);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channelrx/udpsink/udpsink.cpp

@@ -141,6 +141,10 @@ bool UDPSink::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "UDPSink::handleMessage: DSPSignalNotification";
         m_basebandSink->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+         if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }

plugins/channelrx/udpsink/udpsinkgui.cpp

@@ -20,6 +20,7 @@
 #include "plugin/pluginapi.h"
 #include "dsp/spectrumvis.h"
 #include "dsp/dspengine.h"
+#include "dsp/dspcommands.h"
 #include "util/simpleserializer.h"
 #include "util/db.h"
 #include "gui/basicchannelsettingsdialog.h"
@@ -81,6 +82,16 @@ bool UDPSinkGUI::handleMessage(const Message& message )
         blockApplySettings(false);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        const DSPSignalNotification& notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 8, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -139,7 +150,9 @@ UDPSinkGUI::UDPSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandS
 	ui(new Ui::UDPSinkGUI),
 	m_pluginAPI(pluginAPI),
 	m_deviceUISet(deviceUISet),
-	m_udpSink(0),
+	m_udpSink(nullptr),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
 	m_channelMarker(this),
 	m_channelPowerAvg(4, 1e-10),
     m_inPowerAvg(4, 1e-10),
@@ -262,6 +275,7 @@ void UDPSinkGUI::displaySettings()
     displayStreamIndex();
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 
     ui->glSpectrum->setSampleRate(m_settings.m_outputSampleRate);
@@ -399,6 +413,7 @@ void UDPSinkGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -611,7 +626,6 @@ void UDPSinkGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -673,3 +687,8 @@ void UDPSinkGUI::makeUIConnections()
     QObject::connect(ui->squelchGate, &QDial::valueChanged, this, &UDPSinkGUI::on_squelchGate_valueChanged);
     QObject::connect(ui->agc, &ButtonSwitch::toggled, this, &UDPSinkGUI::on_agc_toggled);
 }
+
+void UDPSinkGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channelrx/udpsink/udpsinkgui.h

@@ -68,6 +68,8 @@ private:
 	DeviceUISet* m_deviceUISet;
 	UDPSink* m_udpSink;
 	UDPSinkSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
 	ChannelMarker m_channelMarker;
 	RollupState m_rollupState;
 	MovingAverage<double> m_channelPowerAvg;
@@ -94,6 +96,7 @@ private:
 	void setSampleFormatIndex(const UDPSinkSettings::SampleFormat& sampleFormat);
 	bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
 	void leaveEvent(QEvent*);
 	void enterEvent(QEvent*);

plugins/channeltx/filesource/filesource.cpp

@@ -40,7 +40,6 @@
 
 #include "filesourcebaseband.h"
 
-MESSAGE_CLASS_DEFINITION(FileSource::MsgSampleRateNotification, Message)
 MESSAGE_CLASS_DEFINITION(FileSource::MsgConfigureFileSource, Message)
 MESSAGE_CLASS_DEFINITION(FileSource::MsgConfigureFileSourceWork, Message)
 MESSAGE_CLASS_DEFINITION(FileSource::MsgConfigureFileSourceStreamTiming, Message)
@@ -134,8 +133,7 @@ bool FileSource::handleMessage(const Message& cmd)
         if (m_guiMessageQueue)
         {
             qDebug() << "FileSource::handleMessage: DSPSignalNotification: push to GUI";
-            MsgSampleRateNotification *msg = MsgSampleRateNotification::create(notif.getSampleRate());
+            m_guiMessageQueue->push(new DSPSignalNotification(notif));
-            m_guiMessageQueue->push(msg);
         }
 
         return true;

plugins/channeltx/filesource/filesource.h

@@ -67,26 +67,6 @@ public:
         { }
     };
 
-    class MsgSampleRateNotification : public Message {
-        MESSAGE_CLASS_DECLARATION
-
-    public:
-        static MsgSampleRateNotification* create(int sampleRate) {
-            return new MsgSampleRateNotification(sampleRate);
-        }
-
-        int getSampleRate() const { return m_sampleRate; }
-
-    private:
-
-        MsgSampleRateNotification(int sampleRate) :
-            Message(),
-            m_sampleRate(sampleRate)
-        { }
-
-        int m_sampleRate;
-    };
-
 	class MsgConfigureFileSourceWork : public Message {
 		MESSAGE_CLASS_DECLARATION
 

plugins/channeltx/filesource/filesourcegui.cpp

@@ -22,6 +22,7 @@
 #include "device/deviceapi.h"
 #include "device/deviceuiset.h"
 #include "dsp/hbfilterchainconverter.h"
+#include "dsp/dspcommands.h"
 #include "gui/basicchannelsettingsdialog.h"
 #include "gui/devicestreamselectiondialog.h"
 #include "util/db.h"
@@ -70,10 +71,12 @@ bool FileSourceGUI::deserialize(const QByteArray& data)
 
 bool FileSourceGUI::handleMessage(const Message& message)
 {
-    if (FileSource::MsgSampleRateNotification::match(message))
+    if (DSPSignalNotification::match(message))
     {
-        FileSource::MsgSampleRateNotification& notif = (FileSource::MsgSampleRateNotification&) message;
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_sampleRate = notif.getSampleRate();
+        updateAbsoluteCenterFrequency();
         displayRateAndShift();
         return true;
     }
@@ -165,6 +168,7 @@ FileSourceGUI::FileSourceGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Bas
         ui(new Ui::FileSourceGUI),
         m_pluginAPI(pluginAPI),
         m_deviceUISet(deviceUISet),
+        m_deviceCenterFrequency(0),
         m_sampleRate(0),
         m_shiftFrequencyFactor(0.0),
         m_fileSampleRate(0),
@@ -315,6 +319,7 @@ void FileSourceGUI::displaySettings()
     ui->interpolationFactor->setCurrentIndex(m_settings.m_log2Interp);
     applyInterpolation();
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -497,6 +502,7 @@ void FileSourceGUI::applyPosition()
     m_shiftFrequencyFactor = HBFilterChainConverter::convertToString(m_settings.m_log2Interp, m_settings.m_filterChainHash, s);
     ui->filterChainText->setText(s);
 
+    updateAbsoluteCenterFrequency();
     displayRateAndShift();
     applySettings();
 }
@@ -540,3 +546,9 @@ void FileSourceGUI::makeUIConnections()
     QObject::connect(ui->play, &ButtonSwitch::toggled, this, &FileSourceGUI::on_play_toggled);
     QObject::connect(ui->navTime, &QSlider::valueChanged, this, &FileSourceGUI::on_navTime_valueChanged);
 }
+
+void FileSourceGUI::updateAbsoluteCenterFrequency()
+{
+    int shift = m_shiftFrequencyFactor * m_sampleRate;
+    setStatusFrequency(m_deviceCenterFrequency + shift);
+}

plugins/channeltx/filesource/filesourcegui.h

@@ -64,6 +64,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     FileSourceSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     int m_sampleRate;
     double m_shiftFrequencyFactor; //!< Channel frequency shift factor
     int m_fileSampleRate;
@@ -94,6 +95,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channeltx/localsource/localsource.cpp

@@ -38,7 +38,6 @@
 #include "localsourcebaseband.h"
 
 MESSAGE_CLASS_DEFINITION(LocalSource::MsgConfigureLocalSource, Message)
-MESSAGE_CLASS_DEFINITION(LocalSource::MsgBasebandSampleRateNotification, Message)
 
 const char* const LocalSource::m_channelIdURI = "sdrangel.channel.localsource";
 const char* const LocalSource::m_channelId = "LocalSource";
@@ -122,10 +121,8 @@ bool LocalSource::handleMessage(const Message& cmd)
         DSPSignalNotification *msg = new DSPSignalNotification(cfg.getSampleRate(), cfg.getCenterFrequency());
         m_basebandSource->getInputMessageQueue()->push(msg);
 
-        if (m_guiMessageQueue)
+        if (m_guiMessageQueue) {
-        {
+            m_guiMessageQueue->push(new DSPSignalNotification(cfg));
-            MsgBasebandSampleRateNotification *msg = MsgBasebandSampleRateNotification::create(cfg.getSampleRate());
-            m_guiMessageQueue->push(msg);
         }
 
         return true;

plugins/channeltx/localsource/localsource.h

@@ -60,26 +60,6 @@ public:
         { }
     };
 
-    class MsgBasebandSampleRateNotification : public Message {
-        MESSAGE_CLASS_DECLARATION
-
-    public:
-        static MsgBasebandSampleRateNotification* create(int sampleRate) {
-            return new MsgBasebandSampleRateNotification(sampleRate);
-        }
-
-        int getBasebandSampleRate() const { return m_sampleRate; }
-
-    private:
-
-        MsgBasebandSampleRateNotification(int sampleRate) :
-            Message(),
-            m_sampleRate(sampleRate)
-        { }
-
-        int m_sampleRate;
-    };
-
     LocalSource(DeviceAPI *deviceAPI);
     virtual ~LocalSource();
     virtual void destroy() { delete this; }

plugins/channeltx/localsource/localsourcegui.cpp

@@ -21,6 +21,7 @@
 #include "gui/basicchannelsettingsdialog.h"
 #include "gui/devicestreamselectiondialog.h"
 #include "dsp/hbfilterchainconverter.h"
+#include "dsp/dspcommands.h"
 #include "mainwindow.h"
 
 #include "localsourcegui.h"
@@ -64,10 +65,12 @@ bool LocalSourceGUI::deserialize(const QByteArray& data)
 
 bool LocalSourceGUI::handleMessage(const Message& message)
 {
-    if (LocalSource::MsgBasebandSampleRateNotification::match(message))
+    if (DSPSignalNotification::match(message))
     {
-        LocalSource::MsgBasebandSampleRateNotification& notif = (LocalSource::MsgBasebandSampleRateNotification&) message;
+        DSPSignalNotification& notif = (DSPSignalNotification&) message;
-        m_basebandSampleRate = notif.getBasebandSampleRate();
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        updateAbsoluteCenterFrequency();
         displayRateAndShift();
         return true;
     }
@@ -93,6 +96,7 @@ LocalSourceGUI::LocalSourceGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, B
         m_pluginAPI(pluginAPI),
         m_deviceUISet(deviceUISet),
         m_basebandSampleRate(0),
+        m_deviceCenterFrequency(0),
         m_tickCount(0)
 {
     ui->setupUi(getRollupContents());
@@ -168,6 +172,7 @@ void LocalSourceGUI::displaySettings()
     ui->localDevicePlay->setChecked(m_settings.m_play);
     applyInterpolation();
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -332,6 +337,7 @@ void LocalSourceGUI::applyPosition()
     m_shiftFrequencyFactor = HBFilterChainConverter::convertToString(m_settings.m_log2Interp, m_settings.m_filterChainHash, s);
     ui->filterChainText->setText(s);
 
+    updateAbsoluteCenterFrequency();
     displayRateAndShift();
     applySettings();
 }
@@ -351,3 +357,9 @@ void LocalSourceGUI::makeUIConnections()
     QObject::connect(ui->localDevicesRefresh, &QPushButton::clicked, this, &LocalSourceGUI::on_localDevicesRefresh_clicked);
     QObject::connect(ui->localDevicePlay, &ButtonSwitch::toggled, this, &LocalSourceGUI::on_localDevicePlay_toggled);
 }
+
+void LocalSourceGUI::updateAbsoluteCenterFrequency()
+{
+    int shift = m_shiftFrequencyFactor * m_basebandSampleRate;
+    setStatusFrequency(m_deviceCenterFrequency + shift);
+}

plugins/channeltx/localsource/localsourcegui.h

@@ -85,6 +85,7 @@ private:
     void updateLocalDevices();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channeltx/mod802.15.4/ieee_802_15_4_mod.cpp

@@ -145,10 +145,8 @@ bool IEEE_802_15_4_Mod::handleMessage(const Message& cmd)
         m_basebandSource->getInputMessageQueue()->push(rep);
 
         // Forward to GUI
-        if (getMessageQueueToGUI())
+        if (getMessageQueueToGUI()) {
-        {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
-            DSPSignalNotification *notifToGUI = new DSPSignalNotification(notif);
-            getMessageQueueToGUI()->push(notifToGUI);
         }
 
         return true;

plugins/channeltx/mod802.15.4/ieee_802_15_4_modgui.cpp

@@ -104,7 +104,11 @@ bool IEEE_802_15_4_ModGUI::handleMessage(const Message& message)
     if (DSPSignalNotification::match(message))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
         m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
         m_scopeVis->setLiveRate(m_basebandSampleRate);
         checkSampleRate();
         return true;
@@ -172,6 +176,7 @@ void IEEE_802_15_4_ModGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -332,7 +337,6 @@ void IEEE_802_15_4_ModGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -371,6 +375,7 @@ IEEE_802_15_4_ModGUI::IEEE_802_15_4_ModGUI(PluginAPI* pluginAPI, DeviceUISet *de
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
     m_doApplySettings(true),
     m_basebandSampleRate(12000000)
 {
@@ -566,6 +571,7 @@ void IEEE_802_15_4_ModGUI::displaySettings()
     ui->udpPort->setText(QString::number(m_settings.m_udpPort));
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -639,3 +645,8 @@ void IEEE_802_15_4_ModGUI::makeUIConnections()
     QObject::connect(ui->udpAddress, &QLineEdit::editingFinished, this, &IEEE_802_15_4_ModGUI::on_udpAddress_editingFinished);
     QObject::connect(ui->udpPort, &QLineEdit::editingFinished, this, &IEEE_802_15_4_ModGUI::on_udpPort_editingFinished);
 }
+
+void IEEE_802_15_4_ModGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channeltx/mod802.15.4/ieee_802_15_4_modgui.h

@@ -74,6 +74,7 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     IEEE_802_15_4_ModSettings m_settings;
+    qint64 m_deviceCenterFrequency;
     bool m_doApplySettings;
     SpectrumVis* m_spectrumVis;
     ScopeVis* m_scopeVis;
@@ -98,6 +99,7 @@ private:
     QString getDisplayValueWithMultiplier(int value);
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channeltx/modais/aismod.cpp

@@ -164,6 +164,10 @@ bool AISMod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "AISMod::handleMessage: DSPSignalNotification";
         m_basebandSource->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
         return true;
     }
     else if (MainCore::MsgChannelDemodQuery::match(cmd))

plugins/channeltx/modais/aismodgui.cpp

@@ -25,6 +25,7 @@
 #include "dsp/spectrumvis.h"
 #include "dsp/scopevis.h"
 #include "dsp/glscopesettings.h"
+#include "dsp/dspcommands.h"
 #include "device/deviceuiset.h"
 #include "plugin/pluginapi.h"
 #include "util/simpleserializer.h"
@@ -96,6 +97,16 @@ bool AISModGUI::handleMessage(const Message& message)
         ui->message->setText(m_settings.m_data);
         return true;
     }
+    else if (DSPSignalNotification::match(message))
+    {
+        const DSPSignalNotification& notif = (const DSPSignalNotification&) message;
+        m_deviceCenterFrequency = notif.getCenterFrequency();
+        m_basebandSampleRate = notif.getSampleRate();
+        ui->deltaFrequency->setValueRange(false, 7, -m_basebandSampleRate/2, m_basebandSampleRate/2);
+        ui->deltaFrequencyLabel->setToolTip(tr("Range %1 %L2 Hz").arg(QChar(0xB1)).arg(m_basebandSampleRate/2));
+        updateAbsoluteCenterFrequency();
+        return true;
+    }
     else
     {
         return false;
@@ -127,6 +138,7 @@ void AISModGUI::on_deltaFrequency_changed(qint64 value)
 {
     m_channelMarker.setCenterFrequency(value);
     m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
+    updateAbsoluteCenterFrequency();
     applySettings();
 }
 
@@ -348,7 +360,6 @@ void AISModGUI::onMenuDialogCalled(const QPoint &p)
         dialog.move(p);
         dialog.exec();
 
-        m_settings.m_inputFrequencyOffset = m_channelMarker.getCenterFrequency();
         m_settings.m_rgbColor = m_channelMarker.getColor().rgb();
         m_settings.m_title = m_channelMarker.getTitle();
         m_settings.m_useReverseAPI = dialog.useReverseAPI();
@@ -387,6 +398,8 @@ AISModGUI::AISModGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandSam
     m_pluginAPI(pluginAPI),
     m_deviceUISet(deviceUISet),
     m_channelMarker(this),
+    m_deviceCenterFrequency(0),
+    m_basebandSampleRate(1),
     m_doApplySettings(true)
 {
     ui->setupUi(getRollupContents());
@@ -557,6 +570,7 @@ void AISModGUI::displaySettings()
     ui->message->setText(m_settings.m_data);
 
     getRollupContents()->restoreState(m_rollupState);
+    updateAbsoluteCenterFrequency();
     blockApplySettings(false);
 }
 
@@ -613,3 +627,8 @@ void AISModGUI::makeUIConnections()
     QObject::connect(ui->udpAddress, &QLineEdit::editingFinished, this, &AISModGUI::on_udpAddress_editingFinished);
     QObject::connect(ui->udpPort, &QLineEdit::editingFinished, this, &AISModGUI::on_udpPort_editingFinished);
 }
+
+void AISModGUI::updateAbsoluteCenterFrequency()
+{
+    setStatusFrequency(m_deviceCenterFrequency + m_settings.m_inputFrequencyOffset);
+}

plugins/channeltx/modais/aismodgui.h

@@ -68,6 +68,8 @@ private:
     ChannelMarker m_channelMarker;
     RollupState m_rollupState;
     AISModSettings m_settings;
+    qint64 m_deviceCenterFrequency;
+    int m_basebandSampleRate;
     bool m_doApplySettings;
     SpectrumVis* m_spectrumVis;
     ScopeVis* m_scopeVis;
@@ -87,6 +89,7 @@ private:
     void displayStreamIndex();
     bool handleMessage(const Message& message);
     void makeUIConnections();
+    void updateAbsoluteCenterFrequency();
 
     void leaveEvent(QEvent*);
     void enterEvent(QEvent*);

plugins/channeltx/modam/ammod.cpp

@@ -196,6 +196,10 @@ bool AMMod::handleMessage(const Message& cmd)
         DSPSignalNotification* rep = new DSPSignalNotification(notif); // make a copy
         qDebug() << "AMMod::handleMessage: DSPSignalNotification";
         m_basebandSource->getInputMessageQueue()->push(rep);
+        // Forward to GUI if any
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new DSPSignalNotification(notif));
+        }
 
         return true;
     }