diff --git a/lib/decoder.f90 b/lib/decoder.f90
index 98ab94e70..bc2832f8e 100644
--- a/lib/decoder.f90
+++ b/lib/decoder.f90
@@ -63,15 +63,16 @@ subroutine decoder(ss,c0,nstandalone)
 
   do nqd=1,0,-1
      limit=5000
-     ccflim=3.7
+     ccflim=4.0
      if(ndepth.ge.2) then
         limit=50000
-        ccflim=2.9
+        ccflim=3.0
      endif
      if(ndepth.ge.3 .or. nqd.eq.1) then
         limit=200000
         ccflim=2.5
      endif
+!     if(nstandalone.eq.1) ccflim=0.9*ccflim
 
      if(nqd.eq.1) then
         nfa1=nfqso-ntol
@@ -92,8 +93,8 @@ subroutine decoder(ss,c0,nstandalone)
         ib1=ib
      else
         do i=ia+9,ib-25
-           t1=ccfred(i)/(sum(ccfred(i-8:i-6)/ccflim))
-           t2=ccfred(i)/(sum(ccfred(i+23:i+25)/ccflim))
+           t1=ccfred(i)/(sum(ccfred(i-8:i-6)/3.0))
+           t2=ccfred(i)/(sum(ccfred(i+23:i+25)/3.0))
            if(t1.ge.ccflim .and. t2.ge.ccflim) ccfok(i)=.true.
         enddo
         ccfok(ia1:ib1)=.false.
diff --git a/lib/jt9.f90 b/lib/jt9.f90
index 1c1e9d49d..8ffde7ccc 100644
--- a/lib/jt9.f90
+++ b/lib/jt9.f90
@@ -97,6 +97,8 @@ program jt9
 !        id2(i)=100.0*sin(6.283185307*1600.0*i/12000.0)
 !     enddo
 
+     id2=0                               !??? Why is this necessary ???
+
      do iblk=1,npts/kstep
         k=iblk*kstep
         call timer('read_wav',0)
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 97baa20ea..0b84f5074 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -93,9 +93,6 @@ MainWindow::MainWindow(QSharedMemory *shdmem, QWidget *parent) :
   connect(&proc_jt9, SIGNAL(readyReadStandardError()),
           this, SLOT(readFromStderr()));
 
-  connect(&p3, SIGNAL(readyReadStandardOutput()),
-                    this, SLOT(readFromP3()));
-
   connect(&p3, SIGNAL(error(QProcess::ProcessError)),
           this, SLOT(p3_error()));
 
@@ -830,14 +827,6 @@ void MainWindow::dialFreqChanged2(double f)
   t.sprintf("%.6f",m_dialFreq);
   int n=t.length();
   t=t.mid(0,n-3) + " " + t.mid(n-3,3);
-  float r=m_dialFreq/m_dialFreq0;
-  if(r>0.9 and r<1.1) {
-    ui->labDialFreq->setStyleSheet(
-          "QLabel {background-color : black; color : yellow; }");
-  } else {
-    ui->labDialFreq->setStyleSheet(
-          "QLabel{background-color: red;  color : yellow; }");
-  }
   ui->labDialFreq->setText(t);
   statusChanged();
 }
@@ -1371,15 +1360,6 @@ void MainWindow::readFromStdout()                             //readFromStdout
   }
 }
 
-void MainWindow::readFromP3()                             //readFromP3
-{
-  QByteArray t=p3.readAllStandardOutput();
-  QString s=t;
-  double fMHz=s.toDouble()/1000000.0;
-  int ndiff=1000000.0*(fMHz-m_dialFreq);
-  if(ndiff!=0) dialFreqChanged2(fMHz);
-}
-
 void MainWindow::killFile()
 {
   if(m_fname==m_fileToSave) {
@@ -1444,8 +1424,8 @@ void MainWindow::guiUpdate()
     if(m_iptt==0 and ((bTxTime and !btxMute and fTR<0.4) or m_tune )) {
       icw[0]=m_ncw;
 
-      //Raise PTT
-      if(m_pttMethodIndex==0) {                  //CAT control for PTT
+//Raise PTT
+      if(m_pttMethodIndex==0) {                  //CAT control for PTT=1
         m_cmnd=rig_command() + " T 1";
         p3.start(m_cmnd);
         p3.waitForFinished();
@@ -1453,7 +1433,6 @@ void MainWindow::guiUpdate()
       }
       if(m_pttMethodIndex==1 or m_pttMethodIndex==2) {  //DTR or RTS
           ptt(m_pttPort,1,&m_iptt,&m_COMportOpen);
-//        ptt(m_pttPort,1,&m_iptt);
       }
       if(m_pttMethodIndex==3) {                  //VOX
         m_iptt=1;
@@ -1577,7 +1556,7 @@ void MainWindow::guiUpdate()
   if(nc0 == 0) {
 
     //Lower PTT
-      if(m_pttMethodIndex==0) {                         //CAT
+      if(m_pttMethodIndex==0) {                         //CAT for PTT=0
         m_cmnd=rig_command() + " T 0";
         p3.start(m_cmnd);
         p3.waitForFinished();
@@ -1618,9 +1597,13 @@ void MainWindow::guiUpdate()
       } else {
         lab1->setStyleSheet("QLabel{background-color: #ffff33}");
       }
-      char s[37];
-      sprintf(s,"Tx: %s",msgsent);
-      lab1->setText(s);
+      if(m_tune) {
+        lab1->setText("Tx: TUNE");
+      } else {
+          char s[37];
+          sprintf(s,"Tx: %s",msgsent);
+          lab1->setText(s);
+      }
     } else if(m_monitoring) {
       lab1->setStyleSheet("QLabel{background-color: #00ff00}");
       lab1->setText("Receiving ");
@@ -1638,12 +1621,6 @@ void MainWindow::guiUpdate()
     }
     m_hsym0=khsym;
     m_sec0=nsec;
-
-    if(m_catEnabled) {
-      m_cmnd=rig_command() + " f";
-      p3.start(m_cmnd);
-      p3.waitForFinished();
-    }
   }
 
   iptt0=m_iptt;
@@ -1680,18 +1657,17 @@ QString MainWindow::rig_command()
 void MainWindow::startTx2()
 {
   if(!soundOutThread.isRunning()) {
-    if(!soundOutThread.isRunning()) {
-      QString t=ui->tx6->text();
-      double snr=t.mid(1,5).toDouble();
-      if(snr>0.0 or snr < -50.0) snr=99.0;
-      soundOutThread.setTxSNR(snr);
-      soundOutThread.start(QThread::HighPriority);
-    }
+    QString t=ui->tx6->text();
+    double snr=t.mid(1,5).toDouble();
+    if(snr>0.0 or snr < -50.0) snr=99.0;
+    soundOutThread.setTxSNR(snr);
+    soundOutThread.start(QThread::HighPriority);
     ui->xThermo->setValue(0.0);                         //Set Thermo to zero
     m_monitoring=false;
     soundInThread.setMonitoring(false);
     btxok=true;
     m_transmitting=true;
+    ui->tuneButton->setEnabled(true);
   }
 }
 
@@ -1714,7 +1690,7 @@ void MainWindow::stopTx2()
 {
 //Lower PTT
   if(m_pttMethodIndex==0) {
-    m_cmnd=rig_command() + " T 0";
+    m_cmnd=rig_command() + " T 0";             //CAT for PTT=0
     p3.start(m_cmnd);
     p3.waitForFinished();
   }
@@ -2445,7 +2421,6 @@ void MainWindow::on_bandComboBox_currentIndexChanged(int index)
   m_band=index;
   QString t=m_dFreq[index];
   m_dialFreq=t.toDouble();
-  m_dialFreq0=m_dialFreq;
   dialFreqChanged2(m_dialFreq);
   m_repeatMsg=0;
   if(m_catEnabled) {
@@ -2589,17 +2564,14 @@ void MainWindow::on_actionTx2QSO_triggered(bool checked)
 void MainWindow::on_tuneButton_clicked()
 {
   m_tune=!m_tune;
+  m_repeatMsg=0;
   soundOutThread.setTune(m_tune);
   if(m_tune) {
     ui->tuneButton->setStyleSheet(m_pbTune_style);
+    ui->tuneButton->setEnabled(false);
   } else {
     btxok=false;
     ui->tuneButton->setStyleSheet("");
     on_monitorButton_clicked();
   }
-  /*
-  rigOpen(214,0);
-  rigSetFreq(10138700);
-  qDebug() << "Freq:" << rigFreq();
-  */
 }
diff --git a/mainwindow.h b/mainwindow.h
index 6f88c1c6c..680d76909 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -37,7 +37,6 @@ public slots:
   void doubleClickOnCall2(bool shift, bool ctrl);
   void readFromStdout();
   void readFromStderr();
-  void readFromP3();
   void jt9_error();
   void p3_error();
 
@@ -158,7 +157,6 @@ private:
     Ui::MainWindow *ui;
 
     double  m_dialFreq;
-    double  m_dialFreq0;
 
     qint64  m_msErase;
     qint32  m_nDevIn;
@@ -366,13 +364,6 @@ void azdist_(char* MyGrid, char* HisGrid, double* utch, int* nAz, int* nEl,
              int len1, int len2);
 
 void morse_(char* msg, int* icw, int* ncw, int len);
-
-//void rig_control(int nrig, int verbose);
-
-int rigOpen(int nrig, int verbose);
-void rigSetFreq(int fHz);
-int rigFreq();
-
 }
 
 #endif // MAINWINDOW_H
diff --git a/wsjtx.pro b/wsjtx.pro
index f3c3c2dff..44f29f942 100644
--- a/wsjtx.pro
+++ b/wsjtx.pro
@@ -33,10 +33,8 @@ QMAKE_EXTRA_COMPILERS += gfortran
 }
 
 SOURCES += main.cpp mainwindow.cpp plotter.cpp about.cpp \
-    soundin.cpp soundout.cpp devsetup.cpp \
-    widegraph.cpp getfile.cpp \
-    displaytext.cpp getdev.cpp \
-    logqso.cpp \
+    soundin.cpp soundout.cpp devsetup.cpp widegraph.cpp \
+    getfile.cpp displaytext.cpp getdev.cpp logqso.cpp \
     psk_reporter.cpp
 
 win32 {
@@ -45,9 +43,8 @@ SOURCES += killbyname.cpp
 
 HEADERS  += mainwindow.h plotter.h soundin.h soundout.h \
             about.h devsetup.h widegraph.h getfile.h \
-            commons.h sleep.h displaytext.h \
-    logqso.h \
-    psk_reporter.h
+            commons.h sleep.h displaytext.h logqso.h \
+            psk_reporter.h
 
 DEFINES += __cplusplus
 
@@ -65,7 +62,6 @@ LIBS += -lportaudio -lgfortran -lfftw3f -lqwt-qt4
 win32 {
 INCLUDEPATH += c:/qwt-6.0.1/include
 LIBS += ../wsjtx/lib/libjt9.a
-LIBS += ../wsjtx/lib/libhamlib.dll.a
 LIBS += ../wsjtx/libfftw3f_win.a
 LIBS += ../wsjtx/libpskreporter.a
 LIBS += ../QtSupport/palir-02.dll