diff --git a/Modulator.cpp b/Modulator.cpp
index af7d31aa8..fc5fe5dd8 100644
--- a/Modulator.cpp
+++ b/Modulator.cpp
@@ -35,7 +35,6 @@ Modulator::Modulator (unsigned frameRate, unsigned periodLengthInSeconds, QObjec
   , m_period {periodLengthInSeconds}
   , m_state {Idle}
   , m_tuning {false}
-  , m_muted {false}
   , m_cwLevel {false}
 {
   qsrand (QDateTime::currentMSecsSinceEpoch()); // Initialize random
@@ -280,9 +279,7 @@ qint64 Modulator::readData (char * data, qint64 maxSize)
 
 qint16 Modulator::postProcessSample (qint16 sample) const
 {
-  if (m_muted) {  // silent frame
-    sample = 0;
-  } else if (m_addNoise) {  // Test frame, we'll add noise
+  if (m_addNoise) {  // Test frame, we'll add noise
     qint32 s = m_fac * (gran () + sample * m_snr / 32768.0);
     if (s > std::numeric_limits<qint16>::max ()) {
       s = std::numeric_limits<qint16>::max ();
diff --git a/Modulator.hpp b/Modulator.hpp
index 365d7da09..30e68c0b1 100644
--- a/Modulator.hpp
+++ b/Modulator.hpp
@@ -27,7 +27,6 @@ public:
   void close () override;
 
   bool isTuning () const {return m_tuning;}
-  bool isMuted () const {return m_muted;}
   unsigned frequency () const {return m_frequency;}
   bool isActive () const {return m_state != Idle;}
   void setSpread(double s) {m_fSpread=s;}
@@ -35,7 +34,6 @@ public:
   Q_SLOT void start (unsigned symbolsLength, double framesPerSymbol, unsigned frequency, double toneSpacing, SoundOutput *, Channel = Mono, bool synchronize = true, double dBSNR = 99.);
   Q_SLOT void stop (bool quick = false);
   Q_SLOT void tune (bool newState = true);
-  Q_SLOT void mute (bool newState = true) {m_muted = newState;}
   Q_SLOT void setFrequency (unsigned newFrequency) {m_frequency = newFrequency;}
   Q_SIGNAL void stateChanged (ModulatorState) const;
 
@@ -74,7 +72,6 @@ private:
   ModulatorState volatile m_state;
 
   bool volatile m_tuning;
-  bool volatile m_muted;
   bool m_addNoise;
 
   bool m_cwLevel;
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 47d1fb3e0..87972e31a 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -138,7 +138,6 @@ MainWindow::MainWindow(bool multiple, QSettings * settings, QSharedMemory *shdme
   connect (this, &MainWindow::outAttenuationChanged, &m_soundOutput, &SoundOutput::setAttenuation);
 
   // hook up Modulator slots
-  connect (this, &MainWindow::muteAudioOutput, &m_modulator, &Modulator::mute);
   connect (this, &MainWindow::transmitFrequency, &m_modulator, &Modulator::setFrequency);
   connect (this, &MainWindow::endTransmitMessage, &m_modulator, &Modulator::stop);
   connect (this, &MainWindow::tune, &m_modulator, &Modulator::tune);
@@ -293,7 +292,6 @@ MainWindow::MainWindow(bool multiple, QSettings * settings, QSharedMemory *shdme
   m_auto=false;
   m_waterfallAvg = 1;
   m_txFirst=false;
-  Q_EMIT muteAudioOutput (false);
   m_btxMute=false;
   m_btxok=false;
   m_restart=false;
@@ -414,7 +412,6 @@ MainWindow::MainWindow(bool multiple, QSettings * settings, QSharedMemory *shdme
   Q_EMIT initializeAudioOutputStream (m_config.audio_output_device (), AudioDevice::Mono == m_config.audio_output_channel () ? 1 : 2, m_msAudioOutputBuffered);
 
   Q_EMIT transmitFrequency (m_txFreq - m_XIT);
-  Q_EMIT muteAudioOutput (false);
 
   auto t = "UTC   dB   DT Freq   Message";
   ui->decodedTextLabel->setText(t);
@@ -670,6 +667,9 @@ void MainWindow::on_monitorButton_clicked (bool checked)
   // make sure we have the current rig state
   //  Q_EMIT m_config.sync_transceiver (true);
 
+  qDebug () <<  "MainWindow::on_monitorButton_clicked: checked:" << checked;
+  qDebug () <<  "MainWindow::on_monitorButton_clicked: m_monitoring:" << m_monitoring << "m_transmitting:" << m_transmitting;
+
   if (!m_transmitting)
     {
       m_monitoring = checked;
@@ -713,7 +713,6 @@ void MainWindow::on_autoButton_clicked (bool checked)
   if (!m_auto)
     {
       m_btxok = false;
-      Q_EMIT muteAudioOutput ();
       monitor (true);
       m_repeatMsg = 0;
     }
@@ -1460,7 +1459,6 @@ void MainWindow::guiUpdate()
     }
     if(!bTxTime || m_btxMute) {
       m_btxok=false;
-      Q_EMIT muteAudioOutput ();
     }
   }
 
@@ -1578,7 +1576,6 @@ void MainWindow::guiUpdate()
       }
 
     m_btxok=true;
-    Q_EMIT muteAudioOutput (false);
     m_transmitting=true;
     ui->pbTxMode->setEnabled(false);
     if(!m_tune) {
@@ -1677,7 +1674,6 @@ void MainWindow::startTx2()
     monitor (false);
 
     m_btxok=true;
-    Q_EMIT muteAudioOutput (false);
     m_transmitting=true;
     ui->pbTxMode->setEnabled(false);
   }
@@ -2682,7 +2678,6 @@ void MainWindow::on_stopTxButton_clicked()                    //Stop Tx
     }
 
   m_btxok=false;
-  Q_EMIT muteAudioOutput ();
   m_repeatMsg=0;
 }
 
@@ -2809,7 +2804,6 @@ void MainWindow::handle_transceiver_failure (QString reason)
                               "border-width: 0px; border-radius: 5px;}");
 
   m_btxok=false;
-  Q_EMIT muteAudioOutput ();
   m_repeatMsg=0;
 
   rigFailure ("Rig Control Error", reason);
diff --git a/mainwindow.h b/mainwindow.h
index b5b3014ff..17be29a13 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -188,7 +188,6 @@ private:
   Q_SIGNAL void detectorClose () const;
 
   Q_SIGNAL void finished () const;
-  Q_SIGNAL void muteAudioOutput (bool = true) const;
   Q_SIGNAL void transmitFrequency (unsigned) const;
   Q_SIGNAL void endTransmitMessage (bool quick = false) const;
   Q_SIGNAL void tune (bool = true) const;