diff --git a/plugins/samplesource/limesdrinput/limesdrinput.cpp b/plugins/samplesource/limesdrinput/limesdrinput.cpp
index f479afd1e..326a497cc 100644
--- a/plugins/samplesource/limesdrinput/limesdrinput.cpp
+++ b/plugins/samplesource/limesdrinput/limesdrinput.cpp
@@ -243,6 +243,12 @@ int LimeSDRInput::getLPIndex(float lpfBW) const
     return (int) ((lpfBW - range.min) / range.step);
 }
 
+float LimeSDRInput::getLPValue(int index) const
+{
+    lms_range_t range = m_deviceShared.m_deviceParams->m_lpfRangeRx;
+    return range.min + index * range.step;
+}
+
 uint32_t LimeSDRInput::getHWLog2Decim() const
 {
     return m_deviceShared.m_deviceParams->m_log2OvSRRx;
@@ -262,9 +268,9 @@ bool LimeSDRInput::handleMessage(const Message& message)
 
         return true;
     }
-    else if (MsgSetReferenceLimeSDR::match(message))
+    else if (MsgSetReferenceConfig::match(message))
     {
-        MsgSetReferenceLimeSDR& conf = (MsgSetReferenceLimeSDR&) message;
+        MsgSetReferenceConfig& conf = (MsgSetReferenceConfig&) message;
         qDebug() << "LimeSDRInput::handleMessage: MsgSetReferenceLimeSDR";
         m_settings = conf.getSettings();
         return true;
diff --git a/plugins/samplesource/limesdrinput/limesdrinput.h b/plugins/samplesource/limesdrinput/limesdrinput.h
index e60d2194b..0e720ee9b 100644
--- a/plugins/samplesource/limesdrinput/limesdrinput.h
+++ b/plugins/samplesource/limesdrinput/limesdrinput.h
@@ -51,21 +51,21 @@ public:
         { }
     };
 
-    class MsgSetReferenceLimeSDR : public Message {
+    class MsgSetReferenceConfig : public Message {
         MESSAGE_CLASS_DECLARATION
 
     public:
         const LimeSDRInputSettings& getSettings() const { return m_settings; }
 
-        static MsgSetReferenceLimeSDR* create(const LimeSDRInputSettings& settings)
+        static MsgSetReferenceConfig* create(const LimeSDRInputSettings& settings)
         {
-            return new MsgSetReferenceLimeSDR(settings);
+            return new MsgSetReferenceConfig(settings);
         }
 
     private:
         LimeSDRInputSettings m_settings;
 
-        MsgSetReferenceLimeSDR(const LimeSDRInputSettings& settings) :
+        MsgSetReferenceConfig(const LimeSDRInputSettings& settings) :
             Message(),
             m_settings(settings)
         { }
@@ -114,6 +114,7 @@ public:
     void getSRRange(float& minF, float& maxF, float& stepF) const;
     void getLPRange(float& minF, float& maxF, float& stepF) const;
     int getLPIndex(float lpfBW) const;
+    float getLPValue(int index) const;
     uint32_t getHWLog2Decim() const;
 
 private:
diff --git a/plugins/samplesource/limesdrinput/limesdrinputgui.cpp b/plugins/samplesource/limesdrinput/limesdrinputgui.cpp
index 9d10ac7f2..a4617a6f4 100644
--- a/plugins/samplesource/limesdrinput/limesdrinputgui.cpp
+++ b/plugins/samplesource/limesdrinput/limesdrinputgui.cpp
@@ -174,7 +174,7 @@ void LimeSDRInputGUI::handleMessagesToGUI()
             displaySettings();
             blockApplySettings(false);
 
-            LimeSDRInput::MsgSetReferenceLimeSDR* message = LimeSDRInput::MsgSetReferenceLimeSDR::create(m_settings);
+            LimeSDRInput::MsgSetReferenceConfig* message = LimeSDRInput::MsgSetReferenceConfig::create(m_settings);
             m_sampleSource->getInputMessageQueue()->push(message);
 
             delete message;
@@ -263,60 +263,94 @@ void LimeSDRInputGUI::blockApplySettings(bool block)
 
 void LimeSDRInputGUI::on_startStop_toggled(bool checked)
 {
-
+    if (checked)
+    {
+        if (m_deviceAPI->initAcquisition())
+        {
+            m_deviceAPI->startAcquisition();
+            DSPEngine::instance()->startAudioOutput();
+        }
+    }
+    else
+    {
+        m_deviceAPI->stopAcquisition();
+        DSPEngine::instance()->stopAudioOutput();
+    }
 }
 
 void LimeSDRInputGUI::on_record_toggled(bool checked)
 {
-
+    if (checked)
+    {
+        ui->record->setStyleSheet("QToolButton { background-color : red; }");
+        m_fileSink->startRecording();
+    }
+    else
+    {
+        ui->record->setStyleSheet("QToolButton { background:rgb(79,79,79); }");
+        m_fileSink->stopRecording();
+    }
 }
 
 void LimeSDRInputGUI::on_centerFrequency_changed(quint64 value)
 {
-
+    m_settings.m_centerFrequency = value * 1000;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_dcOffset_toggled(bool checked)
 {
-
+    m_settings.m_dcBlock = checked;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_iqImbalance_toggled(bool checked)
 {
-
+    m_settings.m_iqCorrection = checked;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_sampleRate_changed(quint64 value)
 {
-
-}
+    m_settings.m_devSampleRate = value;
+    sendSettings();}
 
 void LimeSDRInputGUI::on_hwDecim_currentIndexChanged(int index)
 {
-
+    if ((index <0) || (index > 5))
+        return;
+    m_settings.m_log2HardDecim = index;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_swDecim_currentIndexChanged(int index)
 {
-
+    if ((index <0) || (index > 5))
+        return;
+    m_settings.m_log2SoftDecim = index;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_lpf_valueChanged(int value)
 {
-
+    m_settings.m_lpfBW = m_limeSDRInput->getLPValue(value);
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_lpFIREnable_toggled(bool checked)
 {
-
+    m_settings.m_lpfFIREnable = checked;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_lpFIR_changed(quint64 value)
 {
-
+    m_settings.m_lpfFIRBW = value;
+    sendSettings();
 }
 
 void LimeSDRInputGUI::on_gain_valueChanged(int value)
 {
-
+    m_settings.m_gain = value;
+    sendSettings();
 }