Permit signal reports in the range -50 to +49 dB

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@2779 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

lib/packmsg.f90

@@ -0,0 +1,111 @@
+subroutine packmsg(msg,dat,text)
+
+  parameter (NBASE=37*36*10*27*27*27)
+  parameter (NBASE2=262178562)
+  character*22 msg
+  integer dat(12)
+  character*12 c1,c2
+  character*4 c3
+  character*6 grid6
+  logical text1,text2,text3,text
+
+  text=.false.
+! Convert all letters to upper case
+  iz=22
+  do i=1,22
+     if(msg(i:i).ge.'a' .and. msg(i:i).le.'z')                       &
+          msg(i:i)= char(ichar(msg(i:i))+ichar('A')-ichar('a'))
+     if(msg(i:i).ne.' ') iz=i
+  enddo
+  do iter=1,5                           !Collapse multiple blanks into one
+     ib2=index(msg(1:iz),'  ')
+     if(ib2.lt.1) go to 5
+     msg=msg(1:ib2)//msg(ib2+2:)
+     iz=iz-1
+  enddo
+
+! See if it's a CQ message
+5 if(msg(1:3).eq.'CQ ') then
+     i=3
+! ... and if so, does it have a reply frequency?
+     if(msg(4:4).ge.'0' .and. msg(4:4).le.'9' .and.                  &
+          msg(5:5).ge.'0' .and. msg(5:5).le.'9' .and.                &
+          msg(6:6).ge.'0' .and. msg(6:6).le.'9') i=7
+     go to 1
+  endif
+
+  do i=1,22
+     if(msg(i:i).eq.' ') go to 1       !Get 1st blank
+  enddo
+  go to 10                             !Consider msg as plain text
+      
+1 ia=i
+  c1=msg(1:ia-1)
+  do i=ia+1,22
+     if(msg(i:i).eq.' ') go to 2       !Get 2nd blank
+  enddo
+  go to 10                             !Consider msg as plain text
+
+2 ib=i
+  c2=msg(ia+1:ib-1)
+
+  do i=ib+1,22
+     if(msg(i:i).eq.' ') go to 3       !Get 3rd blank
+  enddo
+  go to 10                             !Consider msg as plain text
+
+3 ic=i
+  c3='    '
+  if(ic.ge.ib+1) c3=msg(ib+1:ic)
+  if(c3.eq.'OOO ') c3='    '           !Strip out the OOO flag
+  call getpfx1(c1,k1,junk)
+  call packcall(c1,nc1,text1)
+  call getpfx1(c2,k2,nv2)
+  call packcall(c2,nc2,text2)
+  if(nv2.eq.0) then
+     if(k1.lt.0 .or. k2.lt.0 .or. k1*k2.ne.0) go to 10
+     if(k2.gt.0) k2=k2+450
+     k=max(k1,k2)
+     if(k.gt.0) then
+        call k2grid(k,grid6)
+        c3=grid6(:4)
+     endif
+  endif
+  call packgrid(c3,ng,text3)
+  if(nv2.eq.0 .and. (.not.text1) .and. (.not.text2) .and.           &
+       (.not.text3)) go to 20
+  if(nv2.gt.0) then
+     if(nv2.eq.1) then
+        if(c1(1:3).eq.'CQ ')  nc1=262178563 + k2
+        if(c1(1:4).eq.'QRZ ') nc1=264002072 + k2 
+        if(c1(1:3).eq.'DE ')  nc1=265825581 + k2
+     endif
+     if(nv2.eq.2) then
+        if(c1(1:3).eq.'CQ ')  nc1=267649090 + k2
+        if(c1(1:4).eq.'QRZ ') nc1=267698375 + k2
+        if(c1(1:3).eq.'DE ')  nc1=267747660 + k2
+     endif
+     go to 20
+  endif
+
+! The message will be treated as plain text.
+10 text=.true.
+  call packtext(msg,nc1,nc2,ng)
+  ng=ng+32768
+
+! Encode data into 6-bit words
+20 dat(1)=iand(ishft(nc1,-22),63)               !6 bits
+  dat(2)=iand(ishft(nc1,-16),63)                !6 bits
+  dat(3)=iand(ishft(nc1,-10),63)                !6 bits
+  dat(4)=iand(ishft(nc1, -4),63)                !6 bits
+  dat(5)=4*iand(nc1,15)+iand(ishft(nc2,-26),3)  !4+2 bits
+  dat(6)=iand(ishft(nc2,-20),63)                !6 bits
+  dat(7)=iand(ishft(nc2,-14),63)                !6 bits
+  dat(8)=iand(ishft(nc2, -8),63)                !6 bits
+  dat(9)=iand(ishft(nc2, -2),63)                !6 bits
+  dat(10)=16*iand(nc2,3)+iand(ishft(ng,-12),15) !2+4 bits
+  dat(11)=iand(ishft(ng,-6),63)
+  dat(12)=iand(ng,63)
+
+  return
+end subroutine packmsg