diff --git a/plugins/channeltx/modam/ammod.cpp b/plugins/channeltx/modam/ammod.cpp
index 7b33982cb..5647cac76 100644
--- a/plugins/channeltx/modam/ammod.cpp
+++ b/plugins/channeltx/modam/ammod.cpp
@@ -33,6 +33,7 @@ MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureFileSourceStreamTiming, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgReportFileSourceStreamData, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgReportFileSourceStreamTiming, Message)
 
+const int AMMod::m_levelNbSamples = 480; // every 10ms
 
 AMMod::AMMod() :
     m_audioFifo(4, 48000),
@@ -40,7 +41,10 @@ AMMod::AMMod() :
 	m_fileSize(0),
 	m_recordLength(0),
 	m_sampleRate(48000),
-	m_afInput(AMModInputNone)
+	m_afInput(AMModInputNone),
+	m_levelCalcCount(0),
+	m_peakLevel(0.0f),
+	m_levelSum(0.0f)
 {
 	setObjectName("AMMod");
 
@@ -73,11 +77,11 @@ void AMMod::configure(MessageQueue* messageQueue,
 		Real rfBandwidth,
 		float modFactor,
 		float toneFrequency,
-		int volumeTenths,
+		float volumeFactor,
 		bool audioMute,
 		bool playLoop)
 {
-	Message* cmd = MsgConfigureAMMod::create(rfBandwidth, modFactor, toneFrequency, volumeTenths, audioMute, playLoop);
+	Message* cmd = MsgConfigureAMMod::create(rfBandwidth, modFactor, toneFrequency, volumeFactor, audioMute, playLoop);
 	messageQueue->push(cmd);
 }
 
@@ -124,6 +128,7 @@ void AMMod::modulateSample()
 	Real t;
 
     pullAF(t);
+    calculateLevel(t);
 
     m_modSample.real((t*m_running.m_modFactor + 1.0f) * 16384.0f); // modulate and scale zero frequency carrier
     m_modSample.imag(0.0f);
@@ -159,6 +164,7 @@ void AMMod::pullAF(Real& sample)
             else
             {
             	m_ifstream.read(reinterpret_cast<char*>(&sample), sizeof(Real));
+            	sample *= m_running.m_volumeFactor;
             }
         }
         else
@@ -168,7 +174,7 @@ void AMMod::pullAF(Real& sample)
         break;
     case AMModInputAudio:
         m_audioFifo.read(reinterpret_cast<quint8*>(audioSample), 1, 10);
-        sample = ((audioSample[0] + audioSample[1]) * m_running.m_volumeFactor) / 6553600.0f;
+        sample = ((audioSample[0] + audioSample[1])  / 65536.0f) * m_running.m_volumeFactor;
         break;
     case AMModInputNone:
     default:
@@ -177,6 +183,25 @@ void AMMod::pullAF(Real& sample)
     }
 }
 
+void AMMod::calculateLevel(Real& sample)
+{
+    if (m_levelCalcCount < m_levelNbSamples)
+    {
+        m_peakLevel = std::max(std::fabs(m_peakLevel), sample);
+        m_levelSum += sample * sample;
+        m_levelCalcCount++;
+    }
+    else
+    {
+        qreal rmsLevel = sqrt(m_levelSum / m_levelNbSamples);
+        //qDebug("NFMMod::calculateLevel: %f %f", rmsLevel, m_peakLevel);
+        emit levelChanged(rmsLevel, m_peakLevel, m_levelNbSamples);
+        m_peakLevel = 0.0f;
+        m_levelSum = 0.0f;
+        m_levelCalcCount = 0;
+    }
+}
+
 void AMMod::start()
 {
 	qDebug() << "AMMod::start: m_outputSampleRate: " << m_config.m_outputSampleRate
diff --git a/plugins/channeltx/modam/ammod.h b/plugins/channeltx/modam/ammod.h
index 0a2bd211a..e832f12d5 100644
--- a/plugins/channeltx/modam/ammod.h
+++ b/plugins/channeltx/modam/ammod.h
@@ -177,7 +177,7 @@ public:
             Real rfBandwidth,
             float modFactor,
             float toneFrequency,
-            int volumeFactor,
+			float volumeFactor,
             bool audioMute,
             bool playLoop);
 
@@ -188,6 +188,16 @@ public:
 
     Real getMagSq() const { return m_magsq; }
 
+signals:
+	/**
+	 * Level changed
+	 * \param rmsLevel RMS level in range 0.0 - 1.0
+	 * \param peakLevel Peak level in range 0.0 - 1.0
+	 * \param numSamples Number of audio samples analyzed
+	 */
+	void levelChanged(qreal rmsLevel, qreal peakLevel, int numSamples);
+
+
 private:
     class MsgConfigureAMMod : public Message
     {
@@ -197,11 +207,11 @@ private:
         Real getRFBandwidth() const { return m_rfBandwidth; }
         float getModFactor() const { return m_modFactor; }
         float getToneFrequency() const { return m_toneFrequency; }
-        int getVolumeFactor() const { return m_volumeFactor; }
+        float getVolumeFactor() const { return m_volumeFactor; }
         bool getAudioMute() const { return m_audioMute; }
         bool getPlayLoop() const { return m_playLoop; }
 
-        static MsgConfigureAMMod* create(Real rfBandwidth, float modFactor, float toneFreqeuncy, int volumeFactor, bool audioMute, bool playLoop)
+        static MsgConfigureAMMod* create(Real rfBandwidth, float modFactor, float toneFreqeuncy, float volumeFactor, bool audioMute, bool playLoop)
         {
             return new MsgConfigureAMMod(rfBandwidth, modFactor, toneFreqeuncy, volumeFactor, audioMute, playLoop);
         }
@@ -210,11 +220,11 @@ private:
         Real m_rfBandwidth;
         float m_modFactor;
         float m_toneFrequency;
-        int m_volumeFactor;
+        float m_volumeFactor;
         bool m_audioMute;
         bool m_playLoop;
 
-        MsgConfigureAMMod(Real rfBandwidth, float modFactor, float toneFrequency, int volumeFactor, bool audioMute, bool playLoop) :
+        MsgConfigureAMMod(Real rfBandwidth, float modFactor, float toneFrequency, float volumeFactor, bool audioMute, bool playLoop) :
             Message(),
             m_rfBandwidth(rfBandwidth),
             m_modFactor(modFactor),
@@ -244,7 +254,7 @@ private:
         Real m_rfBandwidth;
         float m_modFactor;
         float m_toneFrequency;
-        int m_volumeFactor;
+        float m_volumeFactor;
         quint32 m_audioSampleRate;
         bool m_audioMute;
         bool m_playLoop;
@@ -255,7 +265,7 @@ private:
             m_rfBandwidth(-1),
             m_modFactor(0.2f),
             m_toneFrequency(100),
-            m_volumeFactor(20),
+            m_volumeFactor(1.0f),
             m_audioSampleRate(0),
             m_audioMute(false),
 			m_playLoop(false)
@@ -293,9 +303,14 @@ private:
     int m_sampleRate;
 
     AMModInputAF m_afInput;
+    quint32 m_levelCalcCount;
+    Real m_peakLevel;
+    Real m_levelSum;
+    static const int m_levelNbSamples;
 
     void apply();
     void pullAF(Real& sample);
+    void calculateLevel(Real& sample);
     void modulateSample();
     void openFileStream();
     void seekFileStream(int seekPercentage);
diff --git a/plugins/channeltx/modam/ammodgui.cpp b/plugins/channeltx/modam/ammodgui.cpp
index 656f15ace..362245229 100644
--- a/plugins/channeltx/modam/ammodgui.cpp
+++ b/plugins/channeltx/modam/ammodgui.cpp
@@ -72,7 +72,7 @@ void AMModGUI::resetToDefaults()
 
 	ui->rfBW->setValue(50);
 	ui->modPercent->setValue(20);
-	ui->micVolume->setValue(50);
+	ui->volume->setValue(10);
 	ui->toneFrequency->setValue(100);
 	ui->deltaFrequency->setValue(0);
 
@@ -83,11 +83,14 @@ void AMModGUI::resetToDefaults()
 QByteArray AMModGUI::serialize() const
 {
 	SimpleSerializer s(1);
+
 	s.writeS32(1, m_channelMarker.getCenterFrequency());
 	s.writeS32(2, ui->rfBW->value());
 	s.writeS32(3, ui->toneFrequency->value());
 	s.writeS32(4, ui->modPercent->value());
 	s.writeU32(5, m_channelMarker.getColor().rgb());
+	s.writeS32(6, ui->volume->value());
+
 	return s.final();
 }
 
@@ -124,6 +127,9 @@ bool AMModGUI::deserialize(const QByteArray& data)
 			m_channelMarker.setColor(u32tmp);
         }
 
+        d.readS32(6, &tmp, 10);
+        ui->volume->setValue(tmp);
+
         blockApplySettings(false);
 		m_channelMarker.blockSignals(false);
 
@@ -210,9 +216,9 @@ void AMModGUI::on_modPercent_valueChanged(int value)
 	applySettings();
 }
 
-void AMModGUI::on_micVolume_valueChanged(int value)
+void AMModGUI::on_volume_valueChanged(int value)
 {
-    ui->micVolumeText->setText(QString("%1").arg(value));
+    ui->volumeText->setText(QString("%1").arg(value / 10.0, 0, 'f', 1));
     applySettings();
 }
 
@@ -360,6 +366,7 @@ AMModGUI::AMModGUI(PluginAPI* pluginAPI, DeviceSinkAPI *deviceAPI, QWidget* pare
 	applySettings();
 
 	connect(m_amMod->getOutputMessageQueue(), SIGNAL(messageEnqueued()), this, SLOT(handleSourceMessages()));
+	connect(m_amMod, SIGNAL(levelChanged(qreal, qreal, int)), ui->volumeMeter, SLOT(levelChanged(qreal, qreal, int)));
 }
 
 AMModGUI::~AMModGUI()
@@ -395,7 +402,7 @@ void AMModGUI::applySettings()
 			ui->rfBW->value() * 100.0,
 			ui->modPercent->value() / 100.0f,
 			ui->toneFrequency->value() * 10.0f,
-			ui->micVolume->value(),
+			ui->volume->value() / 10.0f ,
 			ui->audioMute->isChecked(),
 			ui->playLoop->isChecked());
 	}
diff --git a/plugins/channeltx/modam/ammodgui.h b/plugins/channeltx/modam/ammodgui.h
index f27d57a8b..5e9dbc73a 100644
--- a/plugins/channeltx/modam/ammodgui.h
+++ b/plugins/channeltx/modam/ammodgui.h
@@ -62,7 +62,7 @@ private slots:
     void on_deltaMinus_toggled(bool minus);
     void on_rfBW_valueChanged(int value);
     void on_modPercent_valueChanged(int value);
-    void on_micVolume_valueChanged(int value);
+    void on_volume_valueChanged(int value);
     void on_audioMute_toggled(bool checked);
     void on_tone_toggled(bool checked);
     void on_toneFrequency_valueChanged(int value);
diff --git a/plugins/channeltx/modam/ammodgui.ui b/plugins/channeltx/modam/ammodgui.ui
index ec5cbf2e1..4c7c8ead7 100644
--- a/plugins/channeltx/modam/ammodgui.ui
+++ b/plugins/channeltx/modam/ammodgui.ui
@@ -50,7 +50,16 @@
     <property name="spacing">
      <number>3</number>
     </property>
-    <property name="margin">
+    <property name="leftMargin">
+     <number>2</number>
+    </property>
+    <property name="topMargin">
+     <number>2</number>
+    </property>
+    <property name="rightMargin">
+     <number>2</number>
+    </property>
+    <property name="bottomMargin">
      <number>2</number>
     </property>
     <item>
@@ -287,6 +296,81 @@
       </item>
      </layout>
     </item>
+    <item>
+     <widget class="Line" name="line_4">
+      <property name="orientation">
+       <enum>Qt::Horizontal</enum>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <layout class="QHBoxLayout" name="volumeLayout">
+      <item>
+       <widget class="QLabel" name="volLabel">
+        <property name="text">
+         <string>Vol</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QDial" name="volume">
+        <property name="maximumSize">
+         <size>
+          <width>24</width>
+          <height>24</height>
+         </size>
+        </property>
+        <property name="toolTip">
+         <string>Audio input gain</string>
+        </property>
+        <property name="maximum">
+         <number>100</number>
+        </property>
+        <property name="pageStep">
+         <number>1</number>
+        </property>
+        <property name="value">
+         <number>10</number>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QLabel" name="volumeText">
+        <property name="minimumSize">
+         <size>
+          <width>25</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="toolTip">
+         <string>Audio input gain value</string>
+        </property>
+        <property name="statusTip">
+         <string/>
+        </property>
+        <property name="text">
+         <string>1.0</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="LevelMeter" name="volumeMeter" native="true">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="toolTip">
+         <string>Volume meter. White line is 100% and shoul not be exceeded (red zone)</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </item>
     <item>
      <layout class="QHBoxLayout" name="recordFileSelectLayout">
       <item>
@@ -371,47 +455,6 @@
         </property>
        </widget>
       </item>
-      <item>
-       <widget class="QDial" name="micVolume">
-        <property name="maximumSize">
-         <size>
-          <width>24</width>
-          <height>24</height>
-         </size>
-        </property>
-        <property name="toolTip">
-         <string>Audio input volume</string>
-        </property>
-        <property name="maximum">
-         <number>100</number>
-        </property>
-        <property name="pageStep">
-         <number>1</number>
-        </property>
-        <property name="value">
-         <number>50</number>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QLabel" name="micVolumeText">
-        <property name="minimumSize">
-         <size>
-          <width>20</width>
-          <height>0</height>
-         </size>
-        </property>
-        <property name="toolTip">
-         <string>Audio input volume level</string>
-        </property>
-        <property name="text">
-         <string>50</string>
-        </property>
-        <property name="alignment">
-         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-        </property>
-       </widget>
-      </item>
       <item>
        <spacer name="horizontalSpacer_3">
         <property name="orientation">
@@ -427,6 +470,13 @@
       </item>
      </layout>
     </item>
+    <item>
+     <widget class="Line" name="line_3">
+      <property name="orientation">
+       <enum>Qt::Horizontal</enum>
+      </property>
+     </widget>
+    </item>
     <item>
      <layout class="QHBoxLayout" name="fileNameLayout">
       <item>
@@ -611,29 +661,15 @@
    <extends>QToolButton</extends>
    <header>gui/buttonswitch.h</header>
   </customwidget>
+  <customwidget>
+   <class>LevelMeter</class>
+   <extends>QWidget</extends>
+   <header>gui/levelmeter.h</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <resources>
   <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
  </resources>
  <connections/>
 </ui>
diff --git a/plugins/channeltx/modnfm/nfmmodgui.ui b/plugins/channeltx/modnfm/nfmmodgui.ui
index 2ebc97999..d819d29db 100644
--- a/plugins/channeltx/modnfm/nfmmodgui.ui
+++ b/plugins/channeltx/modnfm/nfmmodgui.ui
@@ -694,26 +694,6 @@
  </customwidgets>
  <resources>
   <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
-  <include location="../../../sdrbase/resources/res.qrc"/>
  </resources>
  <connections/>
 </ui>