diff --git a/plugins/channeltx/modam/ammod.cpp b/plugins/channeltx/modam/ammod.cpp
index 924a04f54..e43849c2c 100644
--- a/plugins/channeltx/modam/ammod.cpp
+++ b/plugins/channeltx/modam/ammod.cpp
@@ -33,7 +33,6 @@ MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureAMMod, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureChannelizer, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureFileSourceName, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureFileSourceSeek, Message)
-MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureAFInput, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgConfigureFileSourceStreamTiming, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgReportFileSourceStreamData, Message)
 MESSAGE_CLASS_DEFINITION(AMMod::MsgReportFileSourceStreamTiming, Message)
@@ -53,7 +52,6 @@ AMMod::AMMod(DeviceSinkAPI *deviceAPI) :
 	m_fileSize(0),
 	m_recordLength(0),
 	m_sampleRate(48000),
-	m_afInput(AMModInputNone),
 	m_levelCalcCount(0),
 	m_peakLevel(0.0f),
 	m_levelSum(0.0f)
@@ -165,12 +163,12 @@ void AMMod::modulateSample()
 
 void AMMod::pullAF(Real& sample)
 {
-    switch (m_afInput)
+    switch (m_settings.m_modAFInput)
     {
-    case AMModInputTone:
+    case AMModSettings::AMModInputTone:
         sample = m_toneNco.next();
         break;
-    case AMModInputFile:
+    case AMModSettings::AMModInputFile:
         // sox f4exb_call.wav --encoding float --endian little f4exb_call.raw
         // ffplay -f f32le -ar 48k -ac 1 f4exb_call.raw
         if (m_ifstream.is_open())
@@ -199,10 +197,10 @@ void AMMod::pullAF(Real& sample)
             sample = 0.0f;
         }
         break;
-    case AMModInputAudio:
+    case AMModSettings::AMModInputAudio:
         sample = ((m_audioBuffer[m_audioBufferFill].l + m_audioBuffer[m_audioBufferFill].r) / 65536.0f) * m_settings.m_volumeFactor;
         break;
-    case AMModInputCWTone:
+    case AMModSettings::AMModInputCWTone:
         Real fadeFactor;
 
         if (m_cwKeyer.getSample())
@@ -223,7 +221,7 @@ void AMMod::pullAF(Real& sample)
             }
         }
         break;
-    case AMModInputNone:
+    case AMModSettings::AMModInputNone:
     default:
         sample = 0.0f;
         break;
@@ -313,13 +311,6 @@ bool AMMod::handleMessage(const Message& cmd)
 
         return true;
     }
-    else if (MsgConfigureAFInput::match(cmd))
-    {
-        MsgConfigureAFInput& conf = (MsgConfigureAFInput&) cmd;
-        m_afInput = conf.getAFInput();
-
-        return true;
-    }
     else if (MsgConfigureFileSourceStreamTiming::match(cmd))
     {
     	std::size_t samplesCount;
@@ -457,6 +448,7 @@ void AMMod::applySettings(const AMModSettings& settings, bool force)
             << " m_volumeFactor: " << settings.m_volumeFactor
             << " m_audioMute: " << settings.m_channelMute
             << " m_playLoop: " << settings.m_playLoop
+            << " m_modAFInput " << settings.m_modAFInput
             << " m_audioDeviceName: " << settings.m_audioDeviceName
             << " force: " << force;
 
diff --git a/plugins/channeltx/modam/ammod.h b/plugins/channeltx/modam/ammod.h
index b0152069d..5260e6986 100644
--- a/plugins/channeltx/modam/ammod.h
+++ b/plugins/channeltx/modam/ammod.h
@@ -89,15 +89,6 @@ public:
         { }
     };
 
-    typedef enum
-    {
-        AMModInputNone,
-        AMModInputTone,
-        AMModInputFile,
-        AMModInputAudio,
-        AMModInputCWTone
-    } AMModInputAF;
-
     class MsgConfigureFileSourceName : public Message
     {
         MESSAGE_CLASS_DECLARATION
@@ -157,27 +148,6 @@ public:
         { }
     };
 
-    class MsgConfigureAFInput : public Message
-    {
-        MESSAGE_CLASS_DECLARATION
-
-    public:
-        AMModInputAF getAFInput() const { return m_afInput; }
-
-        static MsgConfigureAFInput* create(AMModInputAF afInput)
-        {
-            return new MsgConfigureAFInput(afInput);
-        }
-
-    private:
-        AMModInputAF m_afInput;
-
-        MsgConfigureAFInput(AMModInputAF afInput) :
-            Message(),
-            m_afInput(afInput)
-        { }
-    };
-
     class MsgReportFileSourceStreamTiming : public Message
     {
         MESSAGE_CLASS_DECLARATION
@@ -302,7 +272,6 @@ private:
     quint32 m_recordLength; //!< record length in seconds computed from file size
     int m_sampleRate;
 
-    AMModInputAF m_afInput;
     quint32 m_levelCalcCount;
     Real m_peakLevel;
     Real m_levelSum;
diff --git a/plugins/channeltx/modam/ammodgui.cpp b/plugins/channeltx/modam/ammodgui.cpp
index 6d8316f96..97ac3fad5 100644
--- a/plugins/channeltx/modam/ammodgui.cpp
+++ b/plugins/channeltx/modam/ammodgui.cpp
@@ -186,9 +186,8 @@ void AMModGUI::on_play_toggled(bool checked)
     ui->tone->setEnabled(!checked); // release other source inputs
     ui->morseKeyer->setEnabled(!checked);
     ui->mic->setEnabled(!checked);
-    m_modAFInput = checked ? AMMod::AMModInputFile : AMMod::AMModInputNone;
-    AMMod::MsgConfigureAFInput* message = AMMod::MsgConfigureAFInput::create(m_modAFInput);
-    m_amMod->getInputMessageQueue()->push(message);
+    m_settings.m_modAFInput = checked ? AMModSettings::AMModInputFile : AMModSettings::AMModInputNone;
+    applySettings();
     ui->navTimeSlider->setEnabled(!checked);
     m_enableNavTime = !checked;
 }
@@ -198,9 +197,8 @@ void AMModGUI::on_tone_toggled(bool checked)
     ui->play->setEnabled(!checked); // release other source inputs
     ui->morseKeyer->setEnabled(!checked);
     ui->mic->setEnabled(!checked);
-    m_modAFInput = checked ? AMMod::AMModInputTone : AMMod::AMModInputNone;
-    AMMod::MsgConfigureAFInput* message = AMMod::MsgConfigureAFInput::create(m_modAFInput);
-    m_amMod->getInputMessageQueue()->push(message);
+    m_settings.m_modAFInput = checked ? AMModSettings::AMModInputTone : AMModSettings::AMModInputNone;
+    applySettings();
 }
 
 void AMModGUI::on_morseKeyer_toggled(bool checked)
@@ -208,9 +206,8 @@ void AMModGUI::on_morseKeyer_toggled(bool checked)
     ui->play->setEnabled(!checked); // release other source inputs
     ui->tone->setEnabled(!checked); // release other source inputs
     ui->mic->setEnabled(!checked);
-    m_modAFInput = checked ? AMMod::AMModInputCWTone : AMMod::AMModInputNone;
-    AMMod::MsgConfigureAFInput* message = AMMod::MsgConfigureAFInput::create(m_modAFInput);
-    m_amMod->getInputMessageQueue()->push(message);
+    m_settings.m_modAFInput = checked ? AMModSettings::AMModInputCWTone : AMModSettings::AMModInputNone;
+    applySettings();
 }
 
 void AMModGUI::on_mic_toggled(bool checked)
@@ -218,9 +215,8 @@ void AMModGUI::on_mic_toggled(bool checked)
     ui->play->setEnabled(!checked); // release other source inputs
     ui->morseKeyer->setEnabled(!checked);
     ui->tone->setEnabled(!checked); // release other source inputs
-    m_modAFInput = checked ? AMMod::AMModInputAudio : AMMod::AMModInputNone;
-    AMMod::MsgConfigureAFInput* message = AMMod::MsgConfigureAFInput::create(m_modAFInput);
-    m_amMod->getInputMessageQueue()->push(message);
+    m_settings.m_modAFInput = checked ? AMModSettings::AMModInputAudio : AMModSettings::AMModInputNone;
+    applySettings();
 }
 
 void AMModGUI::on_navTimeSlider_valueChanged(int value)
@@ -272,8 +268,7 @@ AMModGUI::AMModGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandSampl
     m_recordSampleRate(48000),
     m_samplesCount(0),
     m_tickCount(0),
-    m_enableNavTime(false),
-    m_modAFInput(AMMod::AMModInputNone)
+    m_enableNavTime(false)
 {
 	ui->setupUi(this);
 	setAttribute(Qt::WA_DeleteOnClose, true);
@@ -413,7 +408,7 @@ void AMModGUI::tick()
 	m_channelPowerDbAvg(powDb);
 	ui->channelPower->setText(tr("%1 dB").arg(m_channelPowerDbAvg.asDouble(), 0, 'f', 1));
 
-    if (((++m_tickCount & 0xf) == 0) && (m_modAFInput == AMMod::AMModInputFile))
+    if (((++m_tickCount & 0xf) == 0) && (m_settings.m_modAFInput == AMModSettings::AMModInputFile))
     {
         AMMod::MsgConfigureFileSourceStreamTiming* message = AMMod::MsgConfigureFileSourceStreamTiming::create();
         m_amMod->getInputMessageQueue()->push(message);
diff --git a/plugins/channeltx/modam/ammodgui.h b/plugins/channeltx/modam/ammodgui.h
index fcccb2c69..de1d79df4 100644
--- a/plugins/channeltx/modam/ammodgui.h
+++ b/plugins/channeltx/modam/ammodgui.h
@@ -74,7 +74,6 @@ private:
     int m_samplesCount;
     std::size_t m_tickCount;
     bool m_enableNavTime;
-    AMMod::AMModInputAF m_modAFInput;
     MessageQueue m_inputMessageQueue;
 
     explicit AMModGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, BasebandSampleSource *channelTx, QWidget* parent = 0);
diff --git a/plugins/channeltx/modam/ammodsettings.cpp b/plugins/channeltx/modam/ammodsettings.cpp
index aaaf572be..da1d78a2e 100644
--- a/plugins/channeltx/modam/ammodsettings.cpp
+++ b/plugins/channeltx/modam/ammodsettings.cpp
@@ -39,6 +39,7 @@ void AMModSettings::resetToDefaults()
     m_playLoop = false;
     m_rgbColor = QColor(255, 255, 0).rgb();
     m_title = "AM Modulator";
+    m_modAFInput = AMModInputAF::AMModInputNone;
     m_audioDeviceName = AudioDeviceManager::m_defaultDeviceName;
 }
 
@@ -63,6 +64,7 @@ QByteArray AMModSettings::serialize() const
 
     s.writeString(9, m_title);
     s.writeString(10, m_audioDeviceName);
+    s.writeS32(11, (int) m_modAFInput);
 
     return s.final();
 }
@@ -103,6 +105,13 @@ bool AMModSettings::deserialize(const QByteArray& data)
         d.readString(9, &m_title, "AM Modulator");
         d.readString(10, &m_audioDeviceName, AudioDeviceManager::m_defaultDeviceName);
 
+        d.readS32(11, &tmp, 0);
+        if ((tmp < 0) || (tmp > (int) AMModInputAF::AMModInputTone)) {
+            m_modAFInput = AMModInputNone;
+        } else {
+            m_modAFInput = (AMModInputAF) tmp;
+        }
+
         return true;
     }
     else
diff --git a/plugins/channeltx/modam/ammodsettings.h b/plugins/channeltx/modam/ammodsettings.h
index 6aadcf6e3..0ed6b435e 100644
--- a/plugins/channeltx/modam/ammodsettings.h
+++ b/plugins/channeltx/modam/ammodsettings.h
@@ -23,6 +23,15 @@ class Serializable;
 
 struct AMModSettings
 {
+    typedef enum
+    {
+        AMModInputNone,
+        AMModInputTone,
+        AMModInputFile,
+        AMModInputAudio,
+        AMModInputCWTone
+    } AMModInputAF;
+
     qint64 m_inputFrequencyOffset;
     Real m_rfBandwidth;
     float m_modFactor;
@@ -32,6 +41,7 @@ struct AMModSettings
     bool m_playLoop;
     quint32 m_rgbColor;
     QString m_title;
+    AMModInputAF m_modAFInput;
     QString m_audioDeviceName;
 
     Serializable *m_channelMarker;