diff --git a/.gitignore b/.gitignore
index c5094ea8f..3ffc4aed5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,5 +8,6 @@ jnq*
 *.o
 *.mod
 *.pro.user
+*.txt
 cmake-build-debug
 cmake-build-release
diff --git a/lib/iscat.f90 b/lib/iscat.f90
index c02a0fbe5..f412df0f4 100644
--- a/lib/iscat.f90
+++ b/lib/iscat.f90
@@ -55,8 +55,8 @@ subroutine iscat(cdat0,npts0,nh,npct,t2,pick,cfile6,minsync,ntol,   &
         if(pick) t3=t2+t3
 
 ! Compute symbol spectra and establish sync:
-        call synciscat(cdat,npts,nh,npct,s0,jsym,df,ntol,NFreeze,     &
-             MouseDF,mousebutton,mode4,nafc,psavg,xsync,sig,ndf0,msglen,    &
+        call synciscat(cdat,npts,nh,npct,s0,jsym,df,ntol,           &
+             mousebutton,mode4,nafc,psavg,xsync,sig,ndf0,msglen,    &
              ipk,jpk,idf,df1)
         nfdot=nint(idf*df1)
 
diff --git a/lib/synciscat.f90 b/lib/synciscat.f90
index 5ce27acfe..747eeca64 100644
--- a/lib/synciscat.f90
+++ b/lib/synciscat.f90
@@ -1,5 +1,5 @@
-subroutine synciscat(cdat,npts,nh,npct,s0,jsym,df,ntol,NFreeze,    &
-     MouseDF,mousebutton,mode4,nafc,psavg,xsync,sig,ndf0,msglen,         &
+subroutine synciscat(cdat,npts,nh,npct,s0,jsym,df,ntol,          &
+     mousebutton,mode4,nafc,psavg,xsync,sig,ndf0,msglen,         &
      ipk,jpk,idf,df1)
 
 ! Synchronize an ISCAT signal
@@ -86,8 +86,8 @@ subroutine synciscat(cdat,npts,nh,npct,s0,jsym,df,ntol,NFreeze,    &
 
   ttot=npts/fsample                         !Length of record (s)
   df1=df/ttot                               !Step size for f1=fdot
-  idf1=-25.0/df1
-  idf2=5.0/df1
+  idf1=int(-25.0/df1)
+  idf2=int(5.0/df1)
   if(nafc.eq.0) then
      idf1=0
      idf2=0
diff --git a/robots/go b/robots/go
deleted file mode 100755
index f7bf846fc..000000000
--- a/robots/go
+++ /dev/null
@@ -1,2 +0,0 @@
-curl https://pskreporter.info/cgi-bin/robot.pl > robo.dat
-robo | sort -nr -k2 -k1
diff --git a/robots/robo.f90 b/robots/robo.f90
deleted file mode 100644
index 1f748378c..000000000
--- a/robots/robo.f90
+++ /dev/null
@@ -1,48 +0,0 @@
-program robo
-
-! Examine spots from PSK Reporter for past week to identify probable robots
-  
-! In a bash shell, from command line:
-!    $ curl https://pskreporter.info/cgi-bin/robot.pl > robo.dat
-!    $ robo | sort -nr -k2
-
-  parameter (NCHARS=20000)
-  parameter (NMAX=100)
-
-  character*1 c
-  character*20000 blob
-  character*12 callsign(0:NMAX)
-  integer*1 ic1
-  
-  open(10,file='/tmp/robo.dat',status='old',access='stream')
-  callsign='            '
-  
-  do ichar=1,NCHARS
-     read(10,end=10) ic1
-     ic=ic1
-     if(ic.lt.0) ic=ic+256
-     c=char(ic)
-     blob(ichar:ichar)=c
-  enddo
-10 continue
-
-  do icall=1,NMAX
-     i1=index(blob,'":{"median_minutes":')-1
-     do i=i1,i1-10,-1
-        if(i1.lt.1) go to 20
-        if(blob(i:i).eq.'"') exit
-     enddo
-     i0=i+1
-     callsign(icall)=blob(i0:i1)
-     i2=index(blob,',')-1
-     read(blob(i1+21:i2),*) median_minutes
-     i3=index(blob,'median_hours')+14
-     i4=index(blob,'}')-1
-     read(blob(i3:i4),*) median_hours
-     write(*,3001) median_minutes,median_hours,trim(callsign(icall))
-3001 format(2i5,2x,a)
-     blob=blob(i4+3:)
-  enddo
-  
-20 continue
-end program robo