diff --git a/sdrbase/dsp/dspdevicemimoengine.cpp b/sdrbase/dsp/dspdevicemimoengine.cpp
index ad2c5da39..3c5465e95 100644
--- a/sdrbase/dsp/dspdevicemimoengine.cpp
+++ b/sdrbase/dsp/dspdevicemimoengine.cpp
@@ -205,26 +205,6 @@ void DSPDeviceMIMOEngine::removeMIMOChannel(MIMOChannel *channel)
     m_syncMessenger.sendWait(cmd);
 }
 
-void DSPDeviceMIMOEngine::addAncillarySink(BasebandSampleSink* sink, int index)
-{
-	qDebug() << "DSPDeviceMIMOEngine::addSink: "
-        << sink->objectName().toStdString().c_str()
-        << " at: "
-        << index;
-	AddBasebandSampleSink cmd(sink, index);
-	m_syncMessenger.sendWait(cmd);
-}
-
-void DSPDeviceMIMOEngine::removeAncillarySink(BasebandSampleSink* sink, int index)
-{
-	qDebug() << "DSPDeviceMIMOEngine::removeSink: "
-        << sink->objectName().toStdString().c_str()
-        << " at: "
-        << index;
-	RemoveBasebandSampleSink cmd(sink, index);
-	m_syncMessenger.sendWait(cmd);
-}
-
 void DSPDeviceMIMOEngine::addSpectrumSink(BasebandSampleSink* spectrumSink)
 {
 	qDebug() << "DSPDeviceMIMOEngine::addSpectrumSink: " << spectrumSink->objectName().toStdString().c_str();
diff --git a/sdrbase/dsp/dspdevicemimoengine.h b/sdrbase/dsp/dspdevicemimoengine.h
index 32e795779..dfc102281 100644
--- a/sdrbase/dsp/dspdevicemimoengine.h
+++ b/sdrbase/dsp/dspdevicemimoengine.h
@@ -236,9 +236,6 @@ public:
     void addMIMOChannel(MIMOChannel *channel);                                     //!< Add a MIMO channel
     void removeMIMOChannel(MIMOChannel *channel);                                  //!< Remove a MIMO channel
 
-	void addAncillarySink(BasebandSampleSink* sink, int index = 0);    //!< Add an ancillary sink like a I/Q recorder
-	void removeAncillarySink(BasebandSampleSink* sink, int index = 0); //!< Remove an ancillary sample sink
-
 	void addSpectrumSink(BasebandSampleSink* spectrumSink);    //!< Add a spectrum vis baseband sample sink
 	void removeSpectrumSink(BasebandSampleSink* spectrumSink); //!< Add a spectrum vis baseband sample sink
     void setSpectrumSinkInput(bool sourceElseSink, int index);