diff --git a/lib/ft8/ft8sim_gfsk.f90 b/lib/ft8/ft8sim_gfsk.f90
deleted file mode 100644
index 4cca67e48..000000000
--- a/lib/ft8/ft8sim_gfsk.f90
+++ /dev/null
@@ -1,131 +0,0 @@
-program ft8sim_gfsk
-
-! Generate simulated "type 2" ft8 files
-! Output is saved to a *.wav file.
-
-  use wavhdr
-  use packjt77
-  include 'ft8_params.f90'               !Set various constants
-  parameter (NWAVE=NN*NSPS)
-  type(hdr) h                            !Header for .wav file
-  character arg*12,fname*17
-  character msg37*37,msgsent37*37
-  character c77*77
-  complex c0(0:NMAX-1)
-  complex c(0:NMAX-1)
-  complex cwave(0:NWAVE-1)
-  real wave(NMAX)
-  real xjunk(NWAVE)
-  integer itone(NN)
-  integer*1 msgbits(77)
-  integer*2 iwave(NMAX)                  !Generated full-length waveform
-
-! Get command-line argument(s)
-  nargs=iargc()
-  if(nargs.ne.7) then
-     print*,'Usage:    ft8sim "message"                 f0     DT fdop del nfiles snr'
-     print*,'Examples: ft8sim "K1ABC W9XYZ EN37"       1500.0 0.0  0.1 1.0   10   -18'
-     print*,'          ft8sim "WA9XYZ/R KA1ABC/R FN42" 1500.0 0.0  0.1 1.0   10   -18'
-     print*,'          ft8sim "K1ABC RR73; W9XYZ <KH1/KH7Z> -11" 300 0 0 0 25 1 -10'
-     go to 999
-  endif
-  call getarg(1,msg37)                   !Message to be transmitted
-  call getarg(2,arg)
-  read(arg,*) f0                         !Frequency (only used for single-signal)
-  call getarg(3,arg)
-  read(arg,*) xdt                        !Time offset from nominal (s)
-  call getarg(4,arg)
-  read(arg,*) fspread                    !Watterson frequency spread (Hz)
-  call getarg(5,arg)
-  read(arg,*) delay                      !Watterson delay (ms)
-  call getarg(6,arg)
-  read(arg,*) nfiles                     !Number of files
-  call getarg(7,arg)
-  read(arg,*) snrdb                      !SNR_2500
-
-  nsig=1
-  if(f0.lt.100.0) then
-     nsig=f0
-     f0=1500
-  endif
-
-  nfiles=abs(nfiles)
-  twopi=8.0*atan(1.0)
-  fs=12000.0                             !Sample rate (Hz)
-  dt=1.0/fs                              !Sample interval (s)
-  tt=NSPS*dt                             !Duration of symbols (s)
-  baud=1.0/tt                            !Keying rate (baud)
-  bw=8*baud                              !Occupied bandwidth (Hz)
-  txt=NZ*dt                              !Transmission length (s)
-  bt=2.0                         
-  bandwidth_ratio=2500.0/(fs/2.0)
-  sig=sqrt(2*bandwidth_ratio) * 10.0**(0.05*snrdb)
-  if(snrdb.gt.90.0) sig=1.0
-  txt=NN*NSPS/12000.0
-
-  ! Source-encode, then get itone()
-  i3=-1
-  n3=-1
-  call pack77(msg37,i3,n3,c77)
-  call genft8(msg37,i3,n3,msgsent37,msgbits,itone)
-  call gen_ft8wave(itone,NN,NSPS,bt,fs,f0,cwave,xjunk,1,NWAVE)  !Generate complex cwave
-
-  write(*,*)  
-  write(*,'(a23,a37,3x,a7,i1,a1,i1)') 'New Style FT8 Message: ',msgsent37,'i3.n3: ',i3,'.',n3
-  write(*,1000) f0,xdt,txt,snrdb,bw
-1000 format('f0:',f9.3,'   DT:',f6.2,'   TxT:',f6.1,'   SNR:',f6.1,    &
-       '  BW:',f4.1)
-  write(*,*)  
-  if(i3.eq.1) then
-    write(*,*) '         mycall                         hiscall                    hisgrid'
-    write(*,'(28i1,1x,i1,1x,28i1,1x,i1,1x,i1,1x,15i1,1x,3i1)') msgbits(1:77) 
-  else
-    write(*,'(a14)') 'Message bits: '
-    write(*,'(77i1)') msgbits
-  endif
-  write(*,*) 
-  write(*,'(a17)') 'Channel symbols: '
-  write(*,'(79i1)') itone
-  write(*,*)  
-
-  call sgran()
-
-  msg0=msg
-  do ifile=1,nfiles
-     c0=0.
-     c0(0:NWAVE-1)=cwave
-     c0=cshift(c0,-nint((xdt+0.5)/dt))
-     if(fspread.ne.0.0 .or. delay.ne.0.0) call watterson(c0,NMAX,NWAVE,fs,delay,fspread)
-     c=sig*c0
-  
-     wave=imag(c)
-     peak=maxval(abs(wave))
-     nslots=1
-   
-     if(snrdb.lt.90) then
-        do i=1,NMAX                   !Add gaussian noise at specified SNR
-           xnoise=gran()
-           wave(i)=wave(i) + xnoise
-        enddo
-     endif
-
-     gain=100.0
-     if(snrdb.lt.90.0) then
-       wave=gain*wave
-     else
-       datpk=maxval(abs(wave))
-       fac=32766.9/datpk
-       wave=fac*wave
-     endif
-     if(any(abs(wave).gt.32767.0)) print*,"Warning - data will be clipped."
-     iwave=nint(wave)
-     h=default_header(12000,NMAX)
-     write(fname,1102) ifile
-1102 format('000000_',i6.6,'.wav')
-     open(10,file=fname,status='unknown',access='stream')
-     write(10) h,iwave                !Save to *.wav file
-     close(10)
-     write(*,1110) ifile,xdt,f0,snrdb,fname
-1110 format(i4,f7.2,f8.2,f7.1,2x,a17)
-  enddo    
-999 end program ft8sim_gfsk