diff --git a/plugins/channelrx/udpsrc/udpsrc.cpp b/plugins/channelrx/udpsrc/udpsrc.cpp
index 7d697f14e..2bba92aca 100644
--- a/plugins/channelrx/udpsrc/udpsrc.cpp
+++ b/plugins/channelrx/udpsrc/udpsrc.cpp
@@ -18,15 +18,18 @@
 #include <QUdpSocket>
 #include <QHostAddress>
 
-#include "dsp/downchannelizer.h"
 #include "dsp/dspengine.h"
 #include "util/db.h"
+#include "dsp/downchannelizer.h"
+#include "dsp/threadedbasebandsamplesink.h"
+#include "device/devicesourceapi.h"
 
 #include "udpsrcgui.h"
 #include "udpsrc.h"
 
 const Real UDPSrc::m_agcTarget = 16384.0f;
 
+MESSAGE_CLASS_DEFINITION(UDPSrc::MsgConfigureChannelizer, Message)
 MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcConfigure, Message)
 MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcConfigureImmediate, Message)
 MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcSpectrum, Message)
@@ -68,6 +71,11 @@ UDPSrc::UDPSrc(DeviceSourceAPI *deviceAPI) :
 	m_scale = 0;
 	m_magsq = 0;
 	m_inMagsq = 0;
+
+    m_channelizer = new DownChannelizer(this);
+    m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
+    m_deviceAPI->addThreadedSink(m_threadedChannelizer);
+
 	UDPFilter = new fftfilt(0.0, (m_config.m_rfBandwidth / 2.0) / m_config.m_outputSampleRate, udpBlockSize);
 
 	m_phaseDiscri.setFMScaling((float) m_config. m_outputSampleRate / (2.0f * m_config.m_fmDeviation));
@@ -96,6 +104,9 @@ UDPSrc::~UDPSrc()
 	delete[] m_udpAudioBuf;
 	if (UDPFilter) delete UDPFilter;
 	if (m_running.m_audioActive) DSPEngine::instance()->removeAudioSink(&m_audioFifo);
+    m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
+    delete m_threadedChannelizer;
+    delete m_channelizer;
 }
 
 /** what needs the "apply" button validation */
@@ -363,6 +374,16 @@ bool UDPSrc::handleMessage(const Message& cmd)
 
         return true;
 	}
+    else if (MsgConfigureChannelizer::match(cmd))
+    {
+        MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
+
+        m_channelizer->configure(m_channelizer->getInputMessageQueue(),
+            cfg.getSampleRate(),
+            cfg.getCenterFrequency());
+
+        return true;
+    }
 	else if (MsgUDPSrcConfigureImmediate::match(cmd))
 	{
 		MsgUDPSrcConfigureImmediate& cfg = (MsgUDPSrcConfigureImmediate&) cmd;
diff --git a/plugins/channelrx/udpsrc/udpsrc.h b/plugins/channelrx/udpsrc/udpsrc.h
index aec5b9ff8..61e283120 100644
--- a/plugins/channelrx/udpsrc/udpsrc.h
+++ b/plugins/channelrx/udpsrc/udpsrc.h
@@ -35,11 +35,36 @@
 
 class QUdpSocket;
 class DeviceSourceAPI;
+class ThreadedBasebandSampleSink;
+class DownChannelizer;
 
 class UDPSrc : public BasebandSampleSink {
 	Q_OBJECT
 
 public:
+    class MsgConfigureChannelizer : public Message {
+        MESSAGE_CLASS_DECLARATION
+
+    public:
+        int getSampleRate() const { return m_sampleRate; }
+        int getCenterFrequency() const { return m_centerFrequency; }
+
+        static MsgConfigureChannelizer* create(int sampleRate, int centerFrequency)
+        {
+            return new MsgConfigureChannelizer(sampleRate, centerFrequency);
+        }
+
+    private:
+        int m_sampleRate;
+        int  m_centerFrequency;
+
+        MsgConfigureChannelizer(int sampleRate, int centerFrequency) :
+            Message(),
+            m_sampleRate(sampleRate),
+            m_centerFrequency(centerFrequency)
+        { }
+    };
+
 	enum SampleFormat {
 		FormatS16LE,
 		FormatNFM,
@@ -294,6 +319,8 @@ protected:
     Config m_running;
 
     DeviceSourceAPI *m_deviceAPI;
+    ThreadedBasebandSampleSink* m_threadedChannelizer;
+    DownChannelizer* m_channelizer;
 
 	QUdpSocket *m_audioSocket;
 
diff --git a/plugins/channelrx/udpsrc/udpsrcgui.cpp b/plugins/channelrx/udpsrc/udpsrcgui.cpp
index 9d9a53c45..6f9e46d56 100644
--- a/plugins/channelrx/udpsrc/udpsrcgui.cpp
+++ b/plugins/channelrx/udpsrc/udpsrcgui.cpp
@@ -18,8 +18,6 @@
 #include "udpsrcgui.h"
 
 #include "device/devicesourceapi.h"
-#include "dsp/downchannelizer.h"
-#include "dsp/threadedbasebandsamplesink.h"
 #include "plugin/pluginapi.h"
 #include "dsp/spectrumvis.h"
 #include "dsp/dspengine.h"
@@ -273,9 +271,6 @@ UDPSrcGUI::UDPSrcGUI(PluginAPI* pluginAPI, DeviceSourceAPI *deviceAPI, QWidget*
 	m_spectrumVis = new SpectrumVis(ui->glSpectrum);
 	m_udpSrc = new UDPSrc(m_deviceAPI);
 	m_udpSrc->setSpectrum(m_spectrumVis);
-	m_channelizer = new DownChannelizer(m_udpSrc);
-	m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
-	m_deviceAPI->addThreadedSink(m_threadedChannelizer);
 
 	ui->fmDeviation->setEnabled(false);
 
@@ -293,7 +288,6 @@ UDPSrcGUI::UDPSrcGUI(PluginAPI* pluginAPI, DeviceSourceAPI *deviceAPI, QWidget*
 	ui->glSpectrum->connectTimer(m_pluginAPI->getMainWindow()->getMasterTimer());
 	connect(&m_pluginAPI->getMainWindow()->getMasterTimer(), SIGNAL(timeout()), this, SLOT(tick()));
 
-	//m_channelMarker = new ChannelMarker(this);
 	m_channelMarker.setBandwidth(16000);
 	m_channelMarker.setCenterFrequency(0);
 	m_channelMarker.setTitle("UDP Sample Source");
@@ -319,12 +313,8 @@ UDPSrcGUI::UDPSrcGUI(PluginAPI* pluginAPI, DeviceSourceAPI *deviceAPI, QWidget*
 UDPSrcGUI::~UDPSrcGUI()
 {
     m_deviceAPI->removeChannelInstance(this);
-	m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
-	delete m_threadedChannelizer;
-	delete m_channelizer;
 	delete m_udpSrc;
 	delete m_spectrumVis;
-	//delete m_channelMarker;
 	delete ui;
 }
 
@@ -402,9 +392,9 @@ void UDPSrcGUI::applySettings(bool force)
 		connect(&m_channelMarker, SIGNAL(changed()), this, SLOT(channelMarkerChanged()));
 		ui->glSpectrum->setSampleRate(outputSampleRate);
 
-		m_channelizer->configure(m_channelizer->getInputMessageQueue(),
-			outputSampleRate,
-			m_channelMarker.getCenterFrequency());
+        UDPSrc::MsgConfigureChannelizer* channelConfigMsg = UDPSrc::MsgConfigureChannelizer::create(
+                outputSampleRate, m_channelMarker.getCenterFrequency());
+        m_udpSrc->getInputMessageQueue()->push(channelConfigMsg);
 
 		UDPSrc::SampleFormat sampleFormat;
 
diff --git a/plugins/channelrx/udpsrc/udpsrcgui.h b/plugins/channelrx/udpsrc/udpsrcgui.h
index 55e51243c..56de35ff0 100644
--- a/plugins/channelrx/udpsrc/udpsrcgui.h
+++ b/plugins/channelrx/udpsrc/udpsrcgui.h
@@ -29,8 +29,6 @@
 
 class PluginAPI;
 class DeviceSourceAPI;
-class ThreadedBasebandSampleSink;
-class DownChannelizer;
 class UDPSrc;
 class SpectrumVis;
 
@@ -103,8 +101,6 @@ private:
 	MessageQueue m_inputMessageQueue;
 
 	// RF path
-	ThreadedBasebandSampleSink* m_threadedChannelizer;
-	DownChannelizer* m_channelizer;
 	SpectrumVis* m_spectrumVis;
 
 	explicit UDPSrcGUI(PluginAPI* pluginAPI, DeviceSourceAPI *deviceAPI, QWidget* parent = 0);