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subroutine fix_contest_msg(mygrid,msg)
! If distance from mygrid to grid1 is more thsn 10000 km, change "grid1"
! to "R grid2" where grid2 is the antipodes of grid1.
character*6 mygrid
character*22 msg
character*6 g1,g2
logical isgrid
isgrid(g1)=g1(1:1).ge.'A' .and. g1(1:1).le.'R' .and. g1(2:2).ge.'A' .and. &
g1(2:2).le.'R' .and. g1(3:3).ge.'0' .and. g1(3:3).le.'9' .and. &
g1(4:4).ge.'0' .and. g1(4:4).le.'9' .and. g1(1:4).ne.'RR73'
n=len(trim(msg))
if(n.lt.4) return
g1=msg(n-3:n)//' '
if(isgrid(g1)) then
call azdist(mygrid,g1,0.d0,nAz,nEl,nDmiles,nDkm,nHotAz,nHotABetter)
if(ndkm.gt.10000) then
call grid2deg(g1,dlong,dlat)
dlong=dlong+180.0
if(dlong.gt.180.0) dlong=dlong-360.0
dlat=-dlat
call deg2grid(dlong,dlat,g2)
msg=msg(1:n-4)//'R '//g2(1:4)
endif
endif
return
end subroutine fix_contest_msg
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