From 141f0ceefae60f62457ab93e1cab4f67d7abc6ef Mon Sep 17 00:00:00 2001
From: Joe Taylor <k1jt@arrl.org>
Date: Fri, 14 Jul 2017 18:19:48 +0000
Subject: [PATCH] Fix nutc in jt9; alternative sync value for late-start FT8
 signals.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7881 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
---
 lib/fsk4hf/sync8.f90 | 30 +++++++++++++++++++++---------
 lib/ft8_decode.f90   |  6 +++---
 lib/jt9.f90          |  6 +++---
 3 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/lib/fsk4hf/sync8.f90 b/lib/fsk4hf/sync8.f90
index 278d5a780..d52765871 100644
--- a/lib/fsk4hf/sync8.f90
+++ b/lib/fsk4hf/sync8.f90
@@ -46,23 +46,35 @@ subroutine sync8(dd,nfa,nfb,syncmin,nfqso,s,candidate,ncand)
   nfos=NFFT1/NSPS   ! # frequency bin oversampling factor
   do i=ia,ib
      do j=-JZ,JZ
-        t=0.
-        t0=0.
+        ta=0.
+        tb=0.
+        tc=0.
+        t0a=0.
+        t0b=0.
+        t0c=0.
         do n=0,6
            k=j+nssy*n
            if(k.ge.1.and.k.le.NHSYM) then
-              t=t + s(i+nfos*icos7(n),k)
-              t0=t0 + sum(s(i:i+nfos*6:nfos,k))
+              ta=ta + s(i+nfos*icos7(n),k)
+              t0a=t0a + sum(s(i:i+nfos*6:nfos,k))
            endif
-           t=t + s(i+nfos*icos7(n),k+nssy*36)
-           t0=t0 + sum(s(i:i+nfos*6:nfos,k+nssy*36))
+           tb=tb + s(i+nfos*icos7(n),k+nssy*36)
+           t0b=t0b + sum(s(i:i+nfos*6:nfos,k+nssy*36))
            if(k+nssy*72.le.NHSYM) then
-              t=t + s(i+nfos*icos7(n),k+nssy*72)
-              t0=t0 + sum(s(i:i+nfos*6:nfos,k+nssy*72))
+              tc=tc + s(i+nfos*icos7(n),k+nssy*72)
+              t0c=t0c + sum(s(i:i+nfos*6:nfos,k+nssy*72))
            endif
         enddo
+        t=ta+tb+tc
+        t0=t0a+t0b+t0c
         t0=(t0-t)/6.0
-        sync2d(i,j)=t/t0
+        sync_abc=t/t0
+
+        t=tb+tc
+        t0=t0b+t0c
+        t0=(t0-t)/6.0
+        sync_bc=t/t0
+        sync2d(i,j)=max(sync_abc,sync_bc)
      enddo
   enddo
 
diff --git a/lib/ft8_decode.f90 b/lib/ft8_decode.f90
index 50008d9de..db04f652e 100644
--- a/lib/ft8_decode.f90
+++ b/lib/ft8_decode.f90
@@ -83,9 +83,9 @@ contains
         call timer('ft8b    ',1)
         if(nbadcrc.eq.0 .and. associated(this%callback)) then
            call this%callback(sync,nsnr,xdt,f1,message)
-           write(81,3081) ncand,icand,iera,nharderrors,ipass,          &
-                sync,f1,xdt,dmin,xsnr,message
-3081       format(2i5,i2,i3,i2,2f7.1,3f7.2,1x,a22)
+!           write(81,3081) ncand,icand,iera,nharderrors,ipass,          &
+!                db(sync),f1,xdt,dmin,xsnr,message
+!3081       format(2i5,i2,i3,i2,f7.2,f7.1,3f7.2,1x,a22)
         endif
       enddo
 !     h=default_header(12000,NMAX)
diff --git a/lib/jt9.f90 b/lib/jt9.f90
index 954ed2510..b75a2ab27 100644
--- a/lib/jt9.f90
+++ b/lib/jt9.f90
@@ -187,7 +187,7 @@ program jt9
      if(infile(i1-5:i1-5).eq.'_') then
         read(infile(i1-4:i1-1),*,err=1) nutc
      else
-        read(infile(i1-6:i1-3),*,err=1) nutc
+        read(infile(i1-6:i1-1),*,err=1) nutc
      endif
      go to 2
 1    nutc=0
@@ -238,8 +238,8 @@ program jt9
               ingain=0
               call timer('symspec ',0)
               nminw=1
-              call symspec(shared_data,k,ntrperiod,nsps,ingain,nminw,pxdb,s,df3,   &
-                   ihsym,npts8,pxdbmax)
+              call symspec(shared_data,k,ntrperiod,nsps,ingain,nminw,pxdb,  &
+                   s,df3,ihsym,npts8,pxdbmax)
               call timer('symspec ',1)
            endif
            nhsym0=nhsym