subroutine deep4(sym0,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
! Deep search routine for JT4
use prog_args
parameter (MAXCALLS=7000,MAXRPT=63)
real*4 sym0(206),sym(206)
character callsign*12,grid*4,message*22,hisgrid*6,ceme*3
character*12 mycall,hiscall
character mycall0*12,hiscall0*12,hisgrid0*6
character*22 decoded
character*22 testmsg(2*MAXCALLS + 2 + MAXRPT)
character*15 callgrid(MAXCALLS)
character*180 line
character*4 rpt(MAXRPT)
integer ncode(206)
real*4 code(206,2*MAXCALLS + 2 + MAXRPT)
real pp(2*MAXCALLS + 2 + MAXRPT)
data neme0/-99/
data rpt/'-01','-02','-03','-04','-05', &
'-06','-07','-08','-09','-10', &
'-11','-12','-13','-14','-15', &
'-16','-17','-18','-19','-20', &
'-21','-22','-23','-24','-25', &
'-26','-27','-28','-29','-30', &
'R-01','R-02','R-03','R-04','R-05', &
'R-06','R-07','R-08','R-09','R-10', &
'R-11','R-12','R-13','R-14','R-15', &
'R-16','R-17','R-18','R-19','R-20', &
'R-21','R-22','R-23','R-24','R-25', &
'R-26','R-27','R-28','R-29','R-30', &
'RO','RRR','73'/
save mycall0,hiscall0,hisgrid0,neme0,ntot,code,testmsg
sym=sym0
if(mycall.eq.mycall0 .and. hiscall.eq.hiscall0 .and. &
hisgrid.eq.hisgrid0 .and. neme.eq.neme0) go to 30
open(23,file=trim(data_dir)//'/CALL3.TXT',status='unknown')
k=0
icall=0
do n=1,MAXCALLS
if(n.eq.1) then
callsign=hiscall
do i=4,12
if(ichar(callsign(i:i)).eq.0) callsign(i:i)=' '
enddo
grid=hisgrid(1:4)
if(ichar(grid(3:3)).eq.0) grid(3:3)=' '
if(ichar(grid(4:4)).eq.0) grid(4:4)=' '
else
read(23,1002,end=20) line
1002 format (A80)
if(line(1:4).eq.'ZZZZ') go to 20
if(line(1:2).eq.'//') go to 10
i1=index(line,',')
if(i1.lt.4) go to 10
i2=index(line(i1+1:),',')
if(i2.lt.5) go to 10
i2=i2+i1
i3=index(line(i2+1:),',')
if(i3.lt.1) i3=index(line(i2+1:),' ')
i3=i2+i3
callsign=line(1:i1-1)
grid=line(i1+1:i2-1)
ceme=line(i2+1:i3-1)
if(neme.eq.1 .and. ceme.ne.'EME') go to 10
endif
icall=icall+1
j1=index(mycall,' ') - 1
if(j1.le.-1) j1=12
if(j1.lt.3) j1=6
j2=index(callsign,' ') - 1
if(j2.le.-1) j2=12
if(j2.lt.3) j2=6
j3=index(mycall,'/') ! j3>0 means compound mycall
j4=index(callsign,'/') ! j4>0 means compound hiscall
callgrid(icall)=callsign(1:j2)
mz=1
! Allow MyCall + HisCall + rpt (?)
if(n.eq.1 .and. j3.lt.1 .and. j4.lt.1 .and. callsign(1:6).ne.' ') &
mz=MAXRPT+1
do m=1,mz
if(m.gt.1) grid=rpt(m-1)
if(j3.lt.1 .and.j4.lt.1) callgrid(icall)=callsign(1:j2)//' '//grid
message=mycall(1:j1)//' '//callgrid(icall)
k=k+1
testmsg(k)=message
call encode4(message,ncode)
code(1:206,k)=2*ncode(1:206)-1
if(n.ge.2) then
! Insert CQ message
if(j4.lt.1) callgrid(icall)=callsign(1:j2)//' '//grid
message='CQ '//callgrid(icall)
k=k+1
testmsg(k)=message
call encode4(message,ncode)
code(1:206,k)=2*ncode(1:206)-1
endif
enddo
10 continue
enddo
20 continue
close(23)
ntot=k
30 mycall0=mycall
hiscall0=hiscall
hisgrid0=hisgrid
neme0=neme
sq=0.
do j=1,206
sq=sq + sym(j)**2
enddo
rms=sqrt(sq/206.0)
sym=sym/rms
p1=-1.e30
p2=-1.e30
do k=1,ntot
pp(k)=0.
! Should re-instate the following:
! if(k.ge.2 .and. k.le.64 .and. flip.gt.0.0) cycle
! Test all messages if flip=+1; skip the CQ messages if flip=-1.
if(flip.gt.0.0 .or. testmsg(k)(1:3).ne.'CQ ') then
p=0.
do j=1,206
p=p + code(j,k)*sym(j)
enddo
pp(k)=p
if(p.gt.p1) then
p1=p
ip1=k
endif
endif
enddo
do i=1,ntot
if(pp(i).gt.p2 .and. testmsg(i).ne.testmsg(ip1)) p2=pp(i)
enddo
qual=p1-max(1.15*p2,70.0)
! ### DO NOT REMOVE ###
rewind 77
if(ip1.ge.1 .and. ip1.le.2*MAXCALLS+2+MAXRPT) write(77,1001) p1,p2,ntot, &
rms,qual,ip1,testmsg(ip1)
1001 format(2f8.2,i8,2f8.2,i6,2x,a22)
call flush(77)
if(qual.gt.1.0) then
decoded=testmsg(ip1)
else
decoded=' '
qual=0.
endif
! Make sure everything is upper case.
do i=1,22
if(decoded(i:i).ge.'a' .and. decoded(i:i).le.'z') &
decoded(i:i)=char(ichar(decoded(i:i))-32)
enddo
return
end subroutine deep4