diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ce27a3db..2f5d9b1b2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -287,7 +287,6 @@ add_library(sdrbase SHARED
 target_link_libraries(sdrbase
 	${QT_LIBRARIES}
 	${OPENGL_LIBRARIES}
-	${LIBUSB_LIBRARIES}
 )
 
 if(FFTW3F_FOUND)
@@ -353,5 +352,8 @@ qt5_use_modules(sdrangel Widgets Multimedia)
 ##############################################################################
 
 add_subdirectory(plugins)
-add_subdirectory(fcdhid)
-add_subdirectory(fcdlib)
+
+if(LIBUSB_FOUND AND UNIX)
+	add_subdirectory(fcdhid)
+	add_subdirectory(fcdlib)
+endif(LIBUSB_FOUND AND UNIX)
diff --git a/plugins/samplesource/filesource/CMakeLists.txt b/plugins/samplesource/filesource/CMakeLists.txt
index 23d26212e..c94ac1a0b 100644
--- a/plugins/samplesource/filesource/CMakeLists.txt
+++ b/plugins/samplesource/filesource/CMakeLists.txt
@@ -23,7 +23,6 @@ include_directories(
 	${CMAKE_CURRENT_BINARY_DIR}
 	${CMAKE_SOURCE_DIR}/include
 	${CMAKE_SOURCE_DIR}/include-gpl
-	${LIBRTLSDR_INCLUDE_DIR}
 )
 
 #include(${QT_USE_FILE})
@@ -42,7 +41,6 @@ add_library(inputfilesource SHARED
 
 target_link_libraries(inputfilesource
 	${QT_LIBRARIES}
-	${LIBUSB_LIBRARIES}
 	sdrbase
 )
 
diff --git a/plugins/samplesource/sdrdaemon/CMakeLists.txt b/plugins/samplesource/sdrdaemon/CMakeLists.txt
index 2258a55a1..082f1bd64 100644
--- a/plugins/samplesource/sdrdaemon/CMakeLists.txt
+++ b/plugins/samplesource/sdrdaemon/CMakeLists.txt
@@ -7,7 +7,6 @@ set(sdrdaemon_SOURCES
 	sdrdaemongui.cpp
 	sdrdaemoninput.cpp
 	sdrdaemonplugin.cpp
-	sdrdaemonthread.cpp
 	sdrdaemonudphandler.cpp
 )
 
@@ -16,7 +15,6 @@ set(sdrdaemon_HEADERS
 	sdrdaemongui.h
 	sdrdaemoninput.h
 	sdrdaemonplugin.h
-	sdrdaemonthread.h
 	sdrdaemonudphandler.h
 )
 
diff --git a/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp b/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp
index 1c4856524..6584de777 100644
--- a/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp
+++ b/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp
@@ -19,8 +19,9 @@
 #include <iostream>
 #include "sdrdaemonbuffer.h"
 
-SDRdaemonBuffer::SDRdaemonBuffer(uint32_t blockSize) :
+SDRdaemonBuffer::SDRdaemonBuffer(uint32_t blockSize, uint32_t rateDivider) :
 	m_blockSize(blockSize),
+	m_rateDivider(rateDivider),
 	m_sync(false),
 	m_lz4(false),
 	m_inCount(0),
@@ -40,7 +41,7 @@ SDRdaemonBuffer::SDRdaemonBuffer(uint32_t blockSize) :
 	m_readCount(0),
 	m_rawSize(0),
 	m_rawBuffer(0),
-	m_frameBuffer(0),
+	m_chunkBuffer(0),
 	m_bytesInBlock(0),
 	m_nbBlocks(0)
 {
@@ -61,8 +62,8 @@ SDRdaemonBuffer::~SDRdaemonBuffer()
 		delete[] m_lz4OutBuffer;
 	}
 
-	if (m_frameBuffer) {
-		delete[] m_frameBuffer;
+	if (m_chunkBuffer) {
+		delete[] m_chunkBuffer;
 	}
 }
 
@@ -140,7 +141,8 @@ void SDRdaemonBuffer::writeData(char *array, uint32_t length)
 		}
 		else
 		{
-			writeDataUncompressed(array, length);
+			//writeDataUncompressed(array, length);
+			writeToRawBufferUncompressed(array, length);
 		}
 	}
 }
@@ -249,10 +251,11 @@ uint8_t *SDRdaemonBuffer::readData(uint32_t length)
 	}
 	else
 	{
-		std::memcpy((void *) m_frameBuffer, (const void *) &m_rawBuffer[readCount], m_rawSize - m_readCount); // read last bit from raw buffer
-		m_readCount = length - (m_rawSize - m_readCount);
-		std::memcpy((void *) &m_frameBuffer[m_rawSize - m_readCount], (const void *) m_frameBuffer, m_readCount); // read the rest at start of raw buffer
-		return m_frameBuffer;
+		uint32_t retLength = std::min(length, m_chunkSize);
+		std::memcpy((void *) m_chunkBuffer, (const void *) &m_rawBuffer[readCount], m_rawSize - m_readCount); // read last bit from raw buffer
+		m_readCount = retLength - (m_rawSize - m_readCount);
+		std::memcpy((void *) &m_chunkBuffer[m_rawSize - m_readCount], (const void *) m_rawBuffer, m_readCount); // read the rest at start of raw buffer
+		return m_chunkBuffer;
 	}
 }
 
@@ -290,11 +293,12 @@ void SDRdaemonBuffer::updateBufferSize(uint32_t sampleRate, uint32_t frameSize)
 	m_rawSize = nbFrames * frameSize;
 	m_rawBuffer = new uint8_t[m_rawSize];
 
-	if (m_frameBuffer) {
-		delete[] m_frameBuffer;
+	if (m_chunkBuffer) {
+		delete[] m_chunkBuffer;
 	}
 
-	m_frameBuffer = new uint8_t[frameSize];
+	m_chunkSize = (sampleRate * 2 * 2) / m_rateDivider;
+	m_chunkBuffer = new uint8_t[m_chunkSize];
 }
 
 void SDRdaemonBuffer::updateBlockCounts(uint32_t nbBytesReceived)
diff --git a/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h b/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h
index 95c527030..92a7c0d1a 100644
--- a/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h
+++ b/plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h
@@ -61,7 +61,7 @@ public:
 	};
 #pragma pack(pop)
 
-	SDRdaemonBuffer(uint32_t blockSize);
+	SDRdaemonBuffer(uint32_t blockSize, uint32_t rateDivider);
 	~SDRdaemonBuffer();
 	bool readMeta(char *array, uint32_t length);  //!< Attempt to read meta. Returns true if meta block
 	void writeData(char *array, uint32_t length); //!< Write data into buffer.
@@ -79,7 +79,8 @@ private:
 	void updateBufferSize(uint32_t sampleRate, uint32_t frameSize);
     void printMeta(MetaData *metaData);
 
-	std::size_t m_blockSize; //!< UDP block (payload) size
+    uint32_t m_blockSize;    //!< UDP block (payload) size
+	uint32_t m_rateDivider;  //!< Number of times per seconds the samples are fetched
 	bool m_sync;             //!< Meta data acquired (Stream synchronized)
 	bool m_lz4;              //!< Stream is compressed with LZ4
 	MetaData m_currentMeta;  //!< Stored current meta data
@@ -104,7 +105,8 @@ private:
 	uint32_t m_readCount;    //!< Current read position in the raw samples buffer
 	uint32_t m_rawSize;      //!< Size of the raw samples buffer in bytes
     uint8_t *m_rawBuffer;    //!< Buffer for raw samples obtained from UDP (I/Q not in a formal I/Q structure)
-    uint8_t *m_frameBuffer;  //!< Buffer to build a frame length of raw samples
+    uint8_t *m_chunkBuffer;  //!< Buffer to build a chunk length of raw samples
+    uint32_t m_chunkSize;    //!< Size of a chunk of samples in bytes
     uint32_t m_bytesInBlock; //!< Number of bytes received in the current UDP block
     uint32_t m_nbBlocks;     //!< Number of UDP blocks received in the current frame
 };
diff --git a/plugins/samplesource/sdrdaemon/sdrdaemonudphandler.cpp b/plugins/samplesource/sdrdaemon/sdrdaemonudphandler.cpp
index f1ce3082c..769bd447b 100644
--- a/plugins/samplesource/sdrdaemon/sdrdaemonudphandler.cpp
+++ b/plugins/samplesource/sdrdaemon/sdrdaemonudphandler.cpp
@@ -17,6 +17,8 @@
 #include <QUdpSocket>
 #include <QDebug>
 #include <unistd.h>
+#include "dsp/dspcommands.h"
+#include "dsp/dspengine.h"
 #include "sdrdaemonudphandler.h"
 #include "sdrdaemoninput.h"
 
@@ -25,7 +27,7 @@ const int SDRdaemonUDPHandler::m_udpPayloadSize = 512;
 
 SDRdaemonUDPHandler::SDRdaemonUDPHandler(SampleFifo *sampleFifo, MessageQueue *outputMessageQueueToGUI) :
 	m_mutex(QMutex::Recursive),
-	m_sdrDaemonBuffer(m_udpPayloadSize),
+	m_sdrDaemonBuffer(m_udpPayloadSize, m_rateDivider),
 	m_dataSocket(0),
 	m_dataAddress(QHostAddress::LocalHost),
 	m_dataPort(9090),
@@ -140,11 +142,13 @@ void SDRdaemonUDPHandler::processData()
 
 			if (change)
 			{
+				DSPSignalNotification *notif = new DSPSignalNotification(m_samplerate, m_centerFrequency);
+				DSPEngine::instance()->getInputMessageQueue()->push(notif);
 				SDRdaemonInput::MsgReportSDRdaemonStreamData *report = SDRdaemonInput::MsgReportSDRdaemonStreamData::create(
-					metaData.m_sampleRate,
-					metaData.m_centerFrequency,
-					metaData.m_tv_sec,
-					metaData.m_tv_usec);
+					m_samplerate,
+					m_centerFrequency,
+					m_tv_sec,
+					m_tv_usec);
 				m_outputMessageQueueToGUI->push(report);
 			}
 		}