diff --git a/CMakeLists.txt b/CMakeLists.txt
index d5fbfb8f5..8f3cb28db 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -391,7 +391,6 @@ set (wsjt_FSRCS
   lib/astro0.f90
   lib/avecho.f90
   lib/averms.f90
-  lib/ft4/averaged_mf.f90
   lib/azdist.f90
   lib/badmsg.f90
   lib/ft8/baseline.f90
@@ -1319,9 +1318,6 @@ target_link_libraries (msk144sim wsjt_fort wsjt_cxx)
 add_executable (ft4sim lib/ft4/ft4sim.f90 wsjtx.rc)
 target_link_libraries (ft4sim wsjt_fort wsjt_cxx)
 
-add_executable (averaged_mf lib/ft4/averaged_mf.f90 wsjtx.rc)
-target_link_libraries (averaged_mf wsjt_fort wsjt_cxx)
-
 add_executable (ft4sim_mult lib/ft4/ft4sim_mult.f90 wsjtx.rc)
 target_link_libraries (ft4sim_mult wsjt_fort wsjt_cxx)
 
diff --git a/lib/ft4/averaged_mf.f90 b/lib/ft4/averaged_mf.f90
deleted file mode 100644
index 2986572b3..000000000
--- a/lib/ft4/averaged_mf.f90
+++ /dev/null
@@ -1,64 +0,0 @@
-program averaged_mf
-
-  parameter (nsps=32)
-  complex cgfsk(3*nsps,64)
-  complex clin(3*nsps,64)
-  complex cavg(3*nsps,4)
-  complex cavl(3*nsps,4)
-  real pulse(3*nsps)
-  real dphi(3*nsps)
-
-  do i=1,3*NSPS
-     t=(i-1.5*nsps)/real(nsps)
-     pulse(i)=gfsk_pulse(1.0,t)
-  enddo
-
-  twopi=8.0*atan(1.0)
-  hmod=1.0
-  dphi_peak=twopi*hmod/real(nsps)
-
-  do iwf=1,64
-    i0=mod((iwf-1)/16,4)
-    i1=mod((iwf-1)/4,4)
-    i2=mod(iwf-1,4)
-    dphi=0.0
-    dphi(1:64)=dphi_peak*pulse(33:96)*i1
-    dphi(1:96)=dphi(1:96)+dphi_peak*pulse(1:96)*i0
-    dphi(33:96)=dphi(33:96)+dphi_peak*pulse(1:64)*i2
-    phi=0.0
-    do j=1,96
-      cgfsk(j,iwf)=cmplx(cos(phi),sin(phi))
-      phi=mod(phi+dphi(j),twopi)
-    enddo
-    cgfsk(:,iwf)=cgfsk(:,iwf)*conjg(cgfsk(48,iwf))
-  enddo
-
-  do iwf=1,64
-    i0=mod((iwf-1)/16,4)
-    i1=mod((iwf-1)/4,4)
-    i2=mod(iwf-1,4)
-    dphi=0.0
-    dphi(1:32)=dphi_peak*i1
-    dphi(33:64)=dphi_peak*i0
-    dphi(65:96)=dphi_peak*i2
-    phi=0.0
-    do j=1,96
-      clin(j,iwf)=cmplx(cos(phi),sin(phi))
-      phi=mod(phi+dphi(j),twopi)
-    enddo
-  enddo
-
-
-  do i=1,4
-    ib=(i-1)*16+1
-    ie=ib+15
-    cavg(:,i)=sum(cgfsk(:,ib:ie),2)/16.0
-    cavl(:,i)=sum(clin(:,ib:ie),2)/16.0
-    do j=1,96
-write(*,*) j
-write(21,*) i,j,real(cavg(j,i)),imag(cavg(j,i)),real(cavl(j,i)),imag(cavl(j,i))
-    enddo
-  enddo
-
-end program averaged_mf
-
diff --git a/lib/ft4/getcandidates4.f90 b/lib/ft4/getcandidates4.f90
index e9860b7a7..3f62e8141 100644
--- a/lib/ft4/getcandidates4.f90
+++ b/lib/ft4/getcandidates4.f90
@@ -10,7 +10,6 @@ subroutine getcandidates4(dd,fa,fb,syncmin,nfqso,maxcand,savg,candidate,   &
   complex cx(0:NH1)
   real candidate(2,maxcand),candidatet(2,maxcand)
   real dd(NMAX)
-  integer ipk(1)
   equivalence (x,cx)
   logical first
   data first/.true./
@@ -33,9 +32,7 @@ subroutine getcandidates4(dd,fa,fb,syncmin,nfqso,maxcand,savg,candidate,   &
      if(ib.gt.NMAX) exit
      x=fac*dd(ia:ib)*window
      call four2a(x,NFFT1,1,-1,0)              !r2c FFT
-     do i=1,NH1
-        s(i,j)=real(cx(i))**2 + aimag(cx(i))**2
-     enddo
+     s(1:NH1,j)=abs(cx(1:NH1))**2
      savg=savg + s(1:NH1,j)                   !Average spectrum
   enddo
   savg=savg/NHSYM
diff --git a/lib/ft4_decode.f90 b/lib/ft4_decode.f90
index 1fd60efa6..c60ee179a 100644
--- a/lib/ft4_decode.f90
+++ b/lib/ft4_decode.f90
@@ -34,7 +34,6 @@ contains
       character message*37,msgsent*37
       character c77*77
       character*37 decodes(100)
-      character*512 data_dir,fname
       character*17 cdatetime0
       character*12 mycall,hiscall
       character*12 mycall0,hiscall0