diff --git a/plugins/channeltx/udpsink/CMakeLists.txt b/plugins/channeltx/udpsink/CMakeLists.txt
index 3b35aaf2d..7e3fe30be 100644
--- a/plugins/channeltx/udpsink/CMakeLists.txt
+++ b/plugins/channeltx/udpsink/CMakeLists.txt
@@ -5,6 +5,7 @@ set(udpsink_SOURCES
 	udpsinkgui.cpp
 	udpsinkplugin.cpp
 	udpsinkudphandler.cpp
+	udpsinkmsg.cpp
 )
 
 set(udpsink_HEADERS
@@ -12,6 +13,7 @@ set(udpsink_HEADERS
 	udpsinkgui.h
 	udpsinkplugin.h
 	udpsinkudphandler.h
+	udpsinkmsg.h
 )
 
 set(udpsink_FORMS
diff --git a/plugins/channeltx/udpsink/udpsink.cpp b/plugins/channeltx/udpsink/udpsink.cpp
index 257ea259a..4d44ef98b 100644
--- a/plugins/channeltx/udpsink/udpsink.cpp
+++ b/plugins/channeltx/udpsink/udpsink.cpp
@@ -17,6 +17,7 @@
 #include <QDebug>
 
 #include "dsp/upchannelizer.h"
+#include "udpsinkmsg.h"
 #include "udpsink.h"
 
 MESSAGE_CLASS_DEFINITION(UDPSink::MsgUDPSinkConfigure, Message)
@@ -31,7 +32,7 @@ UDPSink::UDPSink(MessageQueue* uiMessageQueue, UDPSinkGUI* udpSinkGUI, BasebandS
     m_settingsMutex(QMutex::Recursive)
 {
     setObjectName("UDPSink");
-
+    m_udpHandler.setFeedbackMessageQueue(&m_inputMessageQueue);
     apply(true);
 }
 
@@ -164,6 +165,11 @@ bool UDPSink::handleMessage(const Message& cmd)
 
         return true;
     }
+    else if (UDPSinkMessages::MsgSampleRateCorrection::match(cmd))
+    {
+        // TODO
+        return true;
+    }
     else
     {
         return false;
diff --git a/plugins/channeltx/udpsink/udpsinkmsg.cpp b/plugins/channeltx/udpsink/udpsinkmsg.cpp
new file mode 100644
index 000000000..87f3cdbb4
--- /dev/null
+++ b/plugins/channeltx/udpsink/udpsinkmsg.cpp
@@ -0,0 +1,20 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2017 Edouard Griffiths, F4EXB                                   //
+//                                                                               //
+// This program is free software; you can redistribute it and/or modify          //
+// it under the terms of the GNU General Public License as published by          //
+// the Free Software Foundation as version 3 of the License, or                  //
+//                                                                               //
+// This program is distributed in the hope that it will be useful,               //
+// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
+// GNU General Public License V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include "udpsinkmsg.h"
+
+MESSAGE_CLASS_DEFINITION(UDPSinkMessages::MsgSampleRateCorrection, Message)
+
diff --git a/plugins/channeltx/udpsink/udpsinkmsg.h b/plugins/channeltx/udpsink/udpsinkmsg.h
new file mode 100644
index 000000000..1843250a9
--- /dev/null
+++ b/plugins/channeltx/udpsink/udpsinkmsg.h
@@ -0,0 +1,50 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2017 Edouard Griffiths, F4EXB                                   //
+//                                                                               //
+// This program is free software; you can redistribute it and/or modify          //
+// it under the terms of the GNU General Public License as published by          //
+// the Free Software Foundation as version 3 of the License, or                  //
+//                                                                               //
+// This program is distributed in the hope that it will be useful,               //
+// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
+// GNU General Public License V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#ifndef PLUGINS_CHANNELTX_UDPSINK_UDPSINKMSG_H_
+#define PLUGINS_CHANNELTX_UDPSINK_UDPSINKMSG_H_
+
+#include "util/message.h"
+
+/**
+ * Message(s) used to communicate back from UDPSinkUDPHandler to UDPSink
+ */
+class UDPSinkMessages
+{
+public:
+    class MsgSampleRateCorrection : public Message {
+        MESSAGE_CLASS_DECLARATION
+
+    public:
+        float getCorrectionFactor() const { return m_correctionFactor; }
+
+        static MsgSampleRateCorrection* create(float correctionFactor)
+        {
+            return new MsgSampleRateCorrection(correctionFactor);
+        }
+
+    private:
+        float m_correctionFactor;
+
+        MsgSampleRateCorrection(float correctionFactor) :
+            Message(),
+            m_correctionFactor(correctionFactor)
+        { }
+    };
+};
+
+
+#endif /* PLUGINS_CHANNELTX_UDPSINK_UDPSINKMSG_H_ */
diff --git a/plugins/channeltx/udpsink/udpsinkudphandler.cpp b/plugins/channeltx/udpsink/udpsinkudphandler.cpp
index e1e419217..1db891f4e 100644
--- a/plugins/channeltx/udpsink/udpsinkudphandler.cpp
+++ b/plugins/channeltx/udpsink/udpsinkudphandler.cpp
@@ -28,7 +28,8 @@ UDPSinkUDPHandler::UDPSinkUDPHandler() :
     m_writeIndex(0),
     m_readFrameIndex(m_nbUDPFrames/2),
     m_readIndex(0),
-    m_rwDelta(m_nbUDPFrames/2)
+    m_rwDelta(m_nbUDPFrames/2),
+    m_feedbackMessageQueue(0)
 {
 }
 
diff --git a/plugins/channeltx/udpsink/udpsinkudphandler.h b/plugins/channeltx/udpsink/udpsinkudphandler.h
index 17d74f697..a426f45a0 100644
--- a/plugins/channeltx/udpsink/udpsinkudphandler.h
+++ b/plugins/channeltx/udpsink/udpsinkudphandler.h
@@ -24,6 +24,8 @@
 
 #include "dsp/dsptypes.h"
 
+class MessageQueue;
+
 class UDPSinkUDPHandler : public QObject
 {
     Q_OBJECT
@@ -39,6 +41,8 @@ public:
     void readSample(Real &t);
     void readSample(Sample &s);
 
+    void setFeedbackMessageQueue(MessageQueue *messageQueue) { m_feedbackMessageQueue = messageQueue; }
+
     /** Get buffer gauge value in % of buffer size ([-50:50])
      *  [-50:0] : write leads or read lags
      *  [0:50]  : read leads or write lags
@@ -71,6 +75,7 @@ private:
     int m_readFrameIndex;
     int m_readIndex;
     int m_rwDelta;
+    MessageQueue *m_feedbackMessageQueue;
 };