diff --git a/map65/libm65/CMakeLists.txt b/map65/libm65/CMakeLists.txt
index 826459094..fe5ee170c 100644
--- a/map65/libm65/CMakeLists.txt
+++ b/map65/libm65/CMakeLists.txt
@@ -62,7 +62,6 @@ set (libm65_FSRCS
   packjt.f90
   pfxdump.f90
   polfit.f90
-  read_tf2.f90
   recvpkt.f90
   rfile3a.f90
   s3avg.f90
diff --git a/map65/soundin.cpp b/map65/soundin.cpp
index d82efb5d7..0e50f2935 100644
--- a/map65/soundin.cpp
+++ b/map65/soundin.cpp
@@ -164,16 +164,10 @@ void SoundInThread::run()                           //SoundInThread::run()
 {
   quitExecution = false;
 
-  QFile f("mockRTfiles.txt");
-  m_mockRT=f.exists();
-
-  if(m_mockRT) {
-    inputMockRT();                         //"Mock realtime" input from a .tf2 file
-    return;
-  }
-
   if (m_net) {
-    inputUDP();                            //Network input from Linrad (or equivalent)
+//    qDebug() << "Start inputUDP()";
+    inputUDP();
+//    qDebug() << "Finished inputUDP()";
     return;
   }
 
@@ -455,59 +449,3 @@ void SoundInThread::inputUDP()
   }
   delete udpSocket;
 }
-
-
-//--------------------------------------------------------------- inputMockRT()
-void SoundInThread::inputMockRT()
-{
-  bool qe = quitExecution;
-  int ntr0=99;
-  int k=0;
-  int nsec;
-  int ntr;
-  int nhsym0=0;
-  int iz=174;
-  int nBusy=0;
-  int mstr=0;
-  int mswait=0;
-
-  // Main loop for mock realtime input of data from .tf2 files
-  while (!qe) {
-    qe = quitExecution;
-    if (qe) break;
-    qint64 ms = QDateTime::currentMSecsSinceEpoch();  // Time according to this computer
-    mstr = ms % (1000*m_TRperiod);
-    nsec = (ms % 86400000l) / 1000;
-    ntr = nsec % m_TRperiod;
-
-// Reset buffer pointer and symbol number at start of minute
-    if(ntr < ntr0 or !m_monitoring or m_TRperiod!=m_TRperiod0) {
-      k=0;
-      nhsym0=0;
-      m_TRperiod0=m_TRperiod;
-    }
-    ntr0=ntr;
-
-    if(m_monitoring) {
-      // If buffer will not overflow, move data into datcom_
-      if ((k+iz) <= 60*96000) {
-        if(k>mstr*96) {
-          mswait=(k-mstr*96)/96;
-          msleep(mswait);
-        }
-        read_tf2_(&k);
-      }
-      m_hsym=(k-2048)*11025.0/(2048.0*m_rate);
-      if(m_hsym != nhsym0) {
-        if(m_dataSinkBusy) {
-          nBusy++;
-        } else {
-          m_dataSinkBusy=true;
-          emit readyForFFT(k);         //Signal to compute new FFTs
-        }
-        nhsym0=m_hsym;
-      }
-    }
-  }
-}
-
diff --git a/map65/soundin.h b/map65/soundin.h
index 98261e05e..369cf1d71 100644
--- a/map65/soundin.h
+++ b/map65/soundin.h
@@ -56,7 +56,6 @@ public slots:
 
 private:
   void inputUDP();
-  void inputMockRT();
 
   double m_fAdd;
   bool   m_net;
@@ -64,7 +63,6 @@ private:
   bool   m_bForceCenterFreq;
   bool   m_IQswap;
   bool   m_10db;
-  bool   m_mockRT;
   double m_dForceCenterFreq;
   qint32 m_nrx;
   qint32 m_hsym;
@@ -79,7 +77,6 @@ private:
 extern "C" {
   void recvpkt_(int* nsam, quint16* iblk, qint8* nrx, int* k, double s1[],
                 double s2[], double s3[]);
-  void read_tf2_(int* k);
 }
 
 #endif // SOUNDIN_H