diff --git a/map65/libm65/q65b.f90 b/map65/libm65/q65b.f90
index 41e1f1854..03422f1f2 100644
--- a/map65/libm65/q65b.f90
+++ b/map65/libm65/q65b.f90
@@ -50,8 +50,8 @@ subroutine q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
   ib=nint(ifreq+ntol/df3)
   ipk1=maxloc(sync(ia:ib)%ccfmax)
   ipk=ia+ipk1(1)-1
+  if(ldecoded(ipk)) go to 900
   snr1=sync(ipk)%ccfmax
-
   ipol=1
   if(xpol) ipol=sync(ipk)%ipol
 
@@ -141,6 +141,7 @@ subroutine q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
   freq0=MHz + 0.001d0*ikhz
 
   if(nsnr0.gt.-99) then
+     ldecoded(ipk)=.true.
      nq65df=nint(1000*(0.001*k0*df+nkhz_center-48.0+1.000-1.27046-ikhz))-nfcal
      nq65df=nq65df + nfreq0 - 1000
      npol=nint(poldeg)
@@ -163,7 +164,6 @@ subroutine q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
      endif
 
 ! Write to lu 26, for Messages and Band Map windows
-
      cmode=': '
      cmode(2:2)=char(ichar('A') + mode_q65-1)
      freq1=freq0 + 0.001d0*(ikhz1-ikhz)
diff --git a/map65/libm65/wideband_sync.f90 b/map65/libm65/wideband_sync.f90
index d60444bbe..548538bac 100644
--- a/map65/libm65/wideband_sync.f90
+++ b/map65/libm65/wideband_sync.f90
@@ -21,6 +21,7 @@ module wideband_sync
   parameter (MAX_CANDIDATES=50)
   parameter (SNR1_THRESHOLD=4.5)
   type(sync_dat) :: sync(NFFT)
+  logical ldecoded(NFFT)
   integer nkhz_center
 
   contains
@@ -43,7 +44,7 @@ subroutine get_candidates(ss,savg,xpol,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
      if(sum(ss(1,j,1:NFFT)).gt.0.0) exit
   enddo
   jz=j
-  
+  ldecoded=.false.
   call wb_sync(ss,savg,xpol,jz,nfa,nfb)
 
   tstep=2048.0/11025.0        !0.185760 s: 0.5*tsym_jt65, 0.3096*tsym_q65