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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7654 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
339 lines
10 KiB
Fortran
339 lines
10 KiB
Fortran
!-------------------------------------------------------------------------------
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!
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! This file is part of the WSPR application, Weak Signal Propagation Reporter
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!
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! File Name: wqdecode.f90
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! Description:
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!
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! Copyright (C) 2001-2014 Joseph Taylor, K1JT
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! License: GPL-3
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!
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! This program is free software; you can redistribute it and/or modify it under
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! the terms of the GNU General Public License as published by the Free Software
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! Foundation; either version 3 of the License, or (at your option) any later
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! version.
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!
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! This program is distributed in the hope that it will be useful, but WITHOUT
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! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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! FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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! details.
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!
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! You should have received a copy of the GNU General Public License along with
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! this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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! Street, Fifth Floor, Boston, MA 02110-1301, USA.
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!
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!-------------------------------------------------------------------------------
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subroutine wqdecode(data0,message,ntype)
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parameter (N15=32768)
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integer*1 data0(11)
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character*22 message
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character*12 callsign
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character*3 cdbm
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character grid4*4,grid6*6
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logical first
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character*12 dcall(0:N15-1)
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data first/.true./
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save first,dcall
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! May want to have a timeout (say, one hour?) on calls fetched
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! from the hash table.
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if(first) then
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dcall=' '
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first=.false.
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endif
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message=' '
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call unpack50(data0,n1,n2)
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! print*,data0,n1,n2
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call unpackcall(n1,callsign)
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i1=index(callsign,' ')
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call unpackgrid(n2/128,grid4)
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ntype=iand(n2,127) -64
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! Standard WSPR message (types 0 3 7 10 13 17 ... 60)
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if(ntype.ge.0 .and. ntype.le.62) then
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nu=mod(ntype,10)
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if(nu.eq.0 .or. nu.eq.3 .or. nu.eq.7) then
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write(cdbm,'(i3)'),ntype
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if(cdbm(1:1).eq.' ') cdbm=cdbm(2:)
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if(cdbm(1:1).eq.' ') cdbm=cdbm(2:)
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message=callsign(1:i1)//grid4//' '//cdbm
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call hash(callsign,i1-1,ih)
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dcall(ih)=callsign(:i1)
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else
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nadd=nu
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if(nu.gt.3) nadd=nu-3
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if(nu.gt.7) nadd=nu-7
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ng=n2/128 + 32768*(nadd-1)
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call unpackpfx(ng,callsign)
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ndbm=ntype-nadd
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write(cdbm,'(i3)'),ndbm
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if(cdbm(1:1).eq.' ') cdbm=cdbm(2:)
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if(cdbm(1:1).eq.' ') cdbm=cdbm(2:)
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i2=index(callsign,' ')
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message=callsign(:i2)//cdbm
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call hash(callsign,i2-1,ih)
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dcall(ih)=callsign(:i2)
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endif
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else if(ntype.lt.0) then
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ndbm=-(ntype+1)
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grid6=callsign(6:6)//callsign(1:5)
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ih=(n2-ntype-64)/128
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callsign=dcall(ih)
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write(cdbm,'(i3)'),ndbm
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if(cdbm(1:1).eq.' ') cdbm=cdbm(2:)
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if(cdbm(1:1).eq.' ') cdbm=cdbm(2:)
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i2=index(callsign,' ')
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if(dcall(ih)(1:1).ne.' ') then
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message='<'//callsign(:i2-1)//'> '//grid6//' '//cdbm
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else
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message='<...> '//grid6//' '//cdbm
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endif
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endif
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return
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end subroutine wqdecode
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!-------------------------------------------------------------------------------
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!
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! This file is part of the WSPR application, Weak Signal Propagation Reporter
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!
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! File Name: unpack50.f90
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! Description:
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!
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! Copyright (C) 2001-2014 Joseph Taylor, K1JT
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! License: GPL-3
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!
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! This program is free software; you can redistribute it and/or modify it under
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! the terms of the GNU General Public License as published by the Free Software
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! Foundation; either version 3 of the License, or (at your option) any later
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! version.
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!
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! This program is distributed in the hope that it will be useful, but WITHOUT
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! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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! FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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! details.
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!
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! You should have received a copy of the GNU General Public License along with
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! this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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! Street, Fifth Floor, Boston, MA 02110-1301, USA.
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!
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!-------------------------------------------------------------------------------
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subroutine unpack50(dat,n1,n2)
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integer*1 dat(11)
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i=dat(1)
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i4=iand(i,255)
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n1=ishft(i4,20)
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i=dat(2)
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i4=iand(i,255)
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n1=n1 + ishft(i4,12)
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i=dat(3)
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i4=iand(i,255)
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n1=n1 + ishft(i4,4)
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i=dat(4)
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i4=iand(i,255)
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n1=n1 + iand(ishft(i4,-4),15)
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n2=ishft(iand(i4,15),18)
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i=dat(5)
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i4=iand(i,255)
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n2=n2 + ishft(i4,10)
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i=dat(6)
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i4=iand(i,255)
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n2=n2 + ishft(i4,2)
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i=dat(7)
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i4=iand(i,255)
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n2=n2 + iand(ishft(i4,-6),3)
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return
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end subroutine unpack50
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!-------------------------------------------------------------------------------
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!
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! This file is part of the WSPR application, Weak Signal Propagation Reporter
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!
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! File Name: unpackcall.f90
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! Description:
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!
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! Copyright (C) 2001-2014 Joseph Taylor, K1JT
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! License: GPL-3
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!
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! This program is free software; you can redistribute it and/or modify it under
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! the terms of the GNU General Public License as published by the Free Software
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! Foundation; either version 3 of the License, or (at your option) any later
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! version.
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!
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! This program is distributed in the hope that it will be useful, but WITHOUT
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! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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! FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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! details.
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!
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! You should have received a copy of the GNU General Public License along with
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! this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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! Street, Fifth Floor, Boston, MA 02110-1301, USA.
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!
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!-------------------------------------------------------------------------------
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subroutine unpackcall(ncall,word)
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character word*12,c*37
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data c/'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ '/
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n=ncall
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word='......'
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if(n.ge.262177560) go to 999 !Plain text message ...
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i=mod(n,27)+11
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word(6:6)=c(i:i)
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n=n/27
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i=mod(n,27)+11
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word(5:5)=c(i:i)
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n=n/27
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i=mod(n,27)+11
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word(4:4)=c(i:i)
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n=n/27
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i=mod(n,10)+1
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word(3:3)=c(i:i)
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n=n/10
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i=mod(n,36)+1
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word(2:2)=c(i:i)
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n=n/36
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i=n+1
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word(1:1)=c(i:i)
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do i=1,4
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if(word(i:i).ne.' ') go to 10
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enddo
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go to 999
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10 word=word(i:)
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999 if(word(1:3).eq.'3D0') word='3DA0'//word(4:)
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return
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end subroutine unpackcall
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!-------------------------------------------------------------------------------
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!
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! This file is part of the WSPR application, Weak Signal Propagation Reporter
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!
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! File Name: unpackgrid.f90
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! Description:
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!
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! Copyright (C) 2001-2014 Joseph Taylor, K1JT
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! License: GPL-3
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!
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! This program is free software; you can redistribute it and/or modify it under
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! the terms of the GNU General Public License as published by the Free Software
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! Foundation; either version 3 of the License, or (at your option) any later
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! version.
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!
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! This program is distributed in the hope that it will be useful, but WITHOUT
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! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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! FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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! details.
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!
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! You should have received a copy of the GNU General Public License along with
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! this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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! Street, Fifth Floor, Boston, MA 02110-1301, USA.
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!
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!-------------------------------------------------------------------------------
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subroutine unpackgrid(ng,grid)
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parameter (NGBASE=180*180)
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character grid*4,grid6*6,digit*10
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data digit/'0123456789'/
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grid=' '
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if(ng.ge.32400) go to 10
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dlat=mod(ng,180)-90
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dlong=(ng/180)*2 - 180 + 2
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call deg2grid(dlong,dlat,grid6)
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grid=grid6(1:4) !XXX explicitly truncate this -db
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go to 100
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10 n=ng-NGBASE-1
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if(n.ge.1 .and.n.le.30) then
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grid(1:1)='-'
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grid(2:2)=char(48+n/10)
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grid(3:3)=char(48+mod(n,10))
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else if(n.ge.31 .and.n.le.60) then
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n=n-30
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grid(1:2)='R-'
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grid(3:3)=char(48+n/10)
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grid(4:4)=char(48+mod(n,10))
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else if(n.eq.61) then
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grid='RO'
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else if(n.eq.62) then
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grid='RRR'
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else if(n.eq.63) then
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grid='73'
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endif
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100 return
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end subroutine unpackgrid
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!-------------------------------------------------------------------------------
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!
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! This file is part of the WSPR application, Weak Signal Propagation Reporter
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!
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! File Name: unpackpfx.f90
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! Description:
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!
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! Copyright (C) 2001-2014 Joseph Taylor, K1JT
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! License: GPL-3
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!
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! This program is free software; you can redistribute it and/or modify it under
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! the terms of the GNU General Public License as published by the Free Software
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! Foundation; either version 3 of the License, or (at your option) any later
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! version.
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!
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! This program is distributed in the hope that it will be useful, but WITHOUT
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! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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! FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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! details.
|
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!
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! You should have received a copy of the GNU General Public License along with
|
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! this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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! Street, Fifth Floor, Boston, MA 02110-1301, USA.
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!
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!-------------------------------------------------------------------------------
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subroutine unpackpfx(ng,call1)
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character*12 call1
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character*3 pfx
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if(ng.lt.60000) then
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! Add-on prefix of 1 to 3 characters
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n=ng
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do i=3,1,-1
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nc=mod(n,37)
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if(nc.ge.0 .and. nc.le.9) then
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pfx(i:i)=char(nc+48)
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else if(nc.ge.10 .and. nc.le.35) then
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pfx(i:i)=char(nc+55)
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else
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pfx(i:i)=' '
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endif
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n=n/37
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enddo
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call1=pfx//'/'//call1
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if(call1(1:1).eq.' ') call1=call1(2:)
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if(call1(1:1).eq.' ') call1=call1(2:)
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else
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! Add-on suffix, one or teo characters
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i1=index(call1,' ')
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nc=ng-60000
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if(nc.ge.0 .and. nc.le.9) then
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call1=call1(:i1-1)//'/'//char(nc+48)
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else if(nc.ge.10 .and. nc.le.35) then
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call1=call1(:i1-1)//'/'//char(nc+55)
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else if(nc.ge.36 .and. nc.le.125) then
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nc1=(nc-26)/10
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nc2=mod(nc-26,10)
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call1=call1(:i1-1)//'/'//char(nc1+48)//char(nc2+48)
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endif
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endif
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return
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end subroutine unpackpfx
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