diff --git a/lib/decoder.f90 b/lib/decoder.f90
index c2247d6d0..e4b6b3a80 100644
--- a/lib/decoder.f90
+++ b/lib/decoder.f90
@@ -677,43 +677,43 @@ contains
     return
   end subroutine ft4_decoded
 
-!  subroutine fst280_decoded (this,sync,nsnr,dt,freq,decoded,nap,qual)
+  subroutine fst280_decoded (this,sync,nsnr,dt,freq,decoded,nap,qual)
 
-!    use fst280_decode
-!    implicit none
+    use fst280_decode
+    implicit none
 
-!    class(fst280_decoder), intent(inout) :: this
-!    real, intent(in) :: sync
-!    integer, intent(in) :: nsnr
-!    real, intent(in) :: dt
-!    real, intent(in) :: freq
-!    character(len=37), intent(in) :: decoded
-!    integer, intent(in) :: nap
-!    real, intent(in) :: qual
-!    character*2 annot
-!    character*37 decoded0
+    class(fst280_decoder), intent(inout) :: this
+    real, intent(in) :: sync
+    integer, intent(in) :: nsnr
+    real, intent(in) :: dt
+    real, intent(in) :: freq
+    character(len=37), intent(in) :: decoded
+    integer, intent(in) :: nap
+    real, intent(in) :: qual
+    character*2 annot
+    character*37 decoded0
 
-!    decoded0=decoded
-!    annot='  '
-!    if(nap.ne.0) then
-!       write(annot,'(a1,i1)') 'a',nap
-!       if(qual.lt.0.17) decoded0(37:37)='?'
-!    endif
+    decoded0=decoded
+    annot='  '
+    if(nap.ne.0) then
+       write(annot,'(a1,i1)') 'a',nap
+       if(qual.lt.0.17) decoded0(37:37)='?'
+    endif
 
-!    write(*,1001) params%nutc,nsnr,dt,nint(freq),decoded0,annot
-!1001 format(i6.6,i4,f5.1,i5,' + ',1x,a37,1x,a2)
-!    write(13,1002) params%nutc,nint(sync),nsnr,dt,freq,0,decoded0
-!1002 format(i6.6,i4,i5,f6.1,f8.0,i4,3x,a37,' FST280')
+    write(*,1001) params%nutc,nsnr,dt,nint(freq),decoded0,annot
+1001 format(i6.6,i4,f5.1,i5,' + ',1x,a37,1x,a2)
+    write(13,1002) params%nutc,nint(sync),nsnr,dt,freq,0,decoded0
+1002 format(i6.6,i4,i5,f6.1,f8.0,i4,3x,a37,' FST280')
 
-!    call flush(6)
-!    call flush(13)
+    call flush(6)
+    call flush(13)
 
-!    select type(this)
-!    type is (counting_fst280_decoder)
-!       this%decoded = this%decoded + 1
-!    end select
+    select type(this)
+    type is (counting_fst280_decoder)
+       this%decoded = this%decoded + 1
+    end select
 
-!    return
-!  end subroutine fst280_decoded
+   return
+ end subroutine fst280_decoded
 
 end subroutine multimode_decoder
diff --git a/lib/fst280/fst280sim.f90 b/lib/fst280/fst280sim.f90
index 577589beb..8aa8e61fd 100644
--- a/lib/fst280/fst280sim.f90
+++ b/lib/fst280/fst280sim.f90
@@ -22,7 +22,7 @@ program fst280sim
    if(nargs.ne.9) then
       print*,'Need 9 arguments, got ',nargs
       print*,'Usage:    fst280sim "message"         type      f0   DT   h  fdop  del nfiles snr'
-      print*,'Examples: fst280sim "K1JT K9AN EN50"    C     1500  0.0  1.0  0.1  1.0   10   -15'
+      print*,'Examples: fst280sim "K1JT K9AN EN50"    C     1500  0.0   1   0.1  1.0   10   -15'
       print*,'A: 15 sec'
       print*,'B: 30 sec'
       print*,'C: 1 min'
diff --git a/lib/fst280_decode.f90 b/lib/fst280_decode.f90
index bc4247efd..265c72615 100644
--- a/lib/fst280_decode.f90
+++ b/lib/fst280_decode.f90
@@ -31,6 +31,7 @@ contains
    include 'fst280/fst280_params.f90'
    parameter (MAXCAND=100)
    class(fst280_decoder), intent(inout) :: this
+   procedure(fst280_decode_callback) :: callback
    character*37 msg
    character*120 data_dir
    character*77 c77
@@ -49,7 +50,8 @@ contains
    integer*1 message101(101),message74(74)
    logical badsync,unpk77_success
    integer*2 iwave(300*12000)
-   
+
+   this%callback => callback
    hmod=1                            !### pass as arg ###
    Keff=91
    ndeep=3
@@ -264,14 +266,14 @@ contains
                endif
                if(nharderrors .ge.0 .and. unpk77_success) then
                   ngood=ngood+1
-                  write(*,1100) 0,nint(xsnr),dt_synced,nint(fc_synced),  &
-                       msg(1:22)
-1100              format(i6.6,i5,f5.1,i5,' `',1x,a22)
+!                   write(*,1100) 0,nint(xsnr),dt_synced,nint(fc_synced),  &
+!                        msg(1:22)
+! 1100              format(i6.6,i5,f5.1,i5,' `',1x,a22)
 
-!                  nsnr=nint(xsnr)
-!                  iaptype=0
-!                  qual=0.
-!                  call this%callback(smax1,nsnr,xdt,fc_synced,msg,iaptype,qual)
+                  nsnr=nint(xsnr)
+                  iaptype=0
+                  qual=0.
+                  call this%callback(smax1,nsnr,xdt,fc_synced,msg,iaptype,qual)
                   goto 2002
                else
                   cycle