diff --git a/lib/js8a_decode.f90 b/lib/js8a_decode.f90
index 2ddd004..e3d9cfc 100644
--- a/lib/js8a_decode.f90
+++ b/lib/js8a_decode.f90
@@ -93,6 +93,11 @@ contains
         lsubtract=.false. 
       endif 
 
+      if(NWRITELOG.eq.1) then
+        write(*,*) '<DecodeDebug> pass', ipass, 'of', npass, 'subtract', lsubtract
+        flush(6)
+      endif
+
       call timer('syncjs8 ',0)
       call syncjs8(dd,icos,ifa,ifb,syncmin,nfqso,s,candidate,ncand,sbase)
       call timer('syncjs8 ',1)
@@ -103,7 +108,7 @@ contains
         xdt=candidate(2,icand)
         xbase=10.0**(0.1*(sbase(nint(f1/(12000.0/NFFT1)))-40.0)) ! 3.125Hz
 
-        if(NWRITELOG.eq.1) then
+        if(NWRITELOG.eq.0) then
           write(*,*) '<DecodeDebug> candidate', icand, 'f1', f1, 'sync', sync, 'xdt', xdt, 'xbase', xbase
           flush(6)
         endif
diff --git a/lib/js8b_decode.f90 b/lib/js8b_decode.f90
index eab3524..b58d28e 100644
--- a/lib/js8b_decode.f90
+++ b/lib/js8b_decode.f90
@@ -93,6 +93,11 @@ contains
         lsubtract=.false. 
       endif 
 
+      if(NWRITELOG.eq.1) then
+        write(*,*) '<DecodeDebug> pass', ipass, 'of', npass, 'subtract', lsubtract
+        flush(6)
+      endif
+
       call timer('syncjs8 ',0)
       call syncjs8(dd,icos,ifa,ifb,syncmin,nfqso,s,candidate,ncand,sbase)
       call timer('syncjs8 ',1)
diff --git a/lib/js8c_decode.f90 b/lib/js8c_decode.f90
index df75c5a..586460c 100644
--- a/lib/js8c_decode.f90
+++ b/lib/js8c_decode.f90
@@ -93,6 +93,11 @@ contains
         lsubtract=.false. 
       endif 
 
+      if(NWRITELOG.eq.1) then
+        write(*,*) '<DecodeDebug> pass', ipass, 'of', npass, 'subtract', lsubtract
+        flush(6)
+      endif
+
       call timer('syncjs8 ',0)
       call syncjs8(dd,icos,ifa,ifb,syncmin,nfqso,s,candidate,ncand,sbase)
       call timer('syncjs8 ',1)
diff --git a/lib/js8e_decode.f90 b/lib/js8e_decode.f90
index 1461163..ffc7a6e 100644
--- a/lib/js8e_decode.f90
+++ b/lib/js8e_decode.f90
@@ -93,6 +93,11 @@ contains
         lsubtract=.false. 
       endif 
 
+      if(NWRITELOG.eq.1) then
+        write(*,*) '<DecodeDebug> pass', ipass, 'of', npass, 'subtract', lsubtract
+        flush(6)
+      endif
+
       call timer('syncjs8 ',0)
       call syncjs8(dd,icos,ifa,ifb,syncmin,nfqso,s,candidate,ncand,sbase)
       call timer('syncjs8 ',1)
diff --git a/lib/js8i_decode.f90 b/lib/js8i_decode.f90
index 044522f..4a9e085 100644
--- a/lib/js8i_decode.f90
+++ b/lib/js8i_decode.f90
@@ -93,6 +93,11 @@ contains
         lsubtract=.false. 
       endif 
 
+      if(NWRITELOG.eq.1) then
+        write(*,*) '<DecodeDebug> pass', ipass, 'of', npass, 'subtract', lsubtract
+        flush(6)
+      endif
+
       call timer('syncjs8 ',0)
       call syncjs8(dd,icos,ifa,ifb,syncmin,nfqso,s,candidate,ncand,sbase)
       call timer('syncjs8 ',1)
diff --git a/lib/jt9.f90 b/lib/jt9.f90
index 79aea64..7888afd 100644
--- a/lib/jt9.f90
+++ b/lib/jt9.f90
@@ -294,10 +294,12 @@ program jt9
      shared_data%params%kposB=0
      shared_data%params%kposC=0
      shared_data%params%kposE=0
+     shared_data%params%kposI=0
      shared_data%params%kszA=NMAX-1
      shared_data%params%kszB=NMAX-1
      shared_data%params%kszC=NMAX-1
      shared_data%params%kszE=NMAX-1
+     shared_data%params%kszI=NMAX-1
      call multimode_decoder(shared_data%ss,shared_data%id2,shared_data%params,nfsample)
   enddo
 
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 577e4d6..184c906 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -4418,17 +4418,14 @@ bool MainWindow::decodeEnqueueReady(qint32 k, qint32 k0){
  * @param k0 - the previous frame count
  * @return true if decoder ranges were queued, false otherwise
  */
-bool MainWindow::decodeEnqueueReadyExperiment(qint32 k, qint32 k0){
-    //unsigned msInPeriod ((QDateTime::currentMSecsSinceEpoch() % 86400000LL) % (15 * 1000));
-    // k - (msInPeriod*RX_SAMPLE_RATE/1000) <- samples since beginning of period
-    //static qint32 lastDecodeStartK = -1;
+bool MainWindow::decodeEnqueueReadyExperiment(qint32 k, qint32 /*k0*/){
+    static qint32 lastDecodeStartK = -1;
     //if(lastDecodeStartK == -1){
     //    qint32 cycleStartK = computeCycleForDecode(Varicode::JS8CallNormal, k) * computeFramesPerCycleForDecode(Varicode::JS8CallNormal);
     //    qint32 secondStartK = ((k - cycleStartK) / RX_SAMPLE_RATE) * RX_SAMPLE_RATE;
     //    lastDecodeStartK = secondStartK;
     //}
 
-    static qint32 lastDecodeStartK = -1;
     static qint32 lastDecodeStartSec = -1;
 
     int decodes = 0;
@@ -4460,7 +4457,7 @@ bool MainWindow::decodeEnqueueReadyExperiment(qint32 k, qint32 k0){
             // for normal mode this allows us to look through the last 15 seconds of data
             // + the amount that we've just incremented (say if we were caught in a decode)
             // to search for decodable signals... and we do this _every_ second!
-            //szA = computeFramesPerCycleForDecode(submode) + incrementedBy;
+            // szA = computeFramesPerCycleForDecode(submode) + incrementedBy;
             szA = computeFramesNeededForDecode(submode);
             startA = k - szA;