28 lines
		
	
	
		
			943 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			28 lines
		
	
	
		
			943 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| subroutine to_contest_msg(msg0,msg)
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| 
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| ! If the message has "R grid4" istead of "grid4", remove the "R "
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| ! and substitute the diametrically opposite grid.
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|   
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|   character*6 g1,g2
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|   character*22 msg0,msg
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|   logical isgrid
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|   isgrid(g1)=g1(1:1).ge.'A' .and. g1(1:1).le.'R' .and. g1(2:2).ge.'A' .and. &
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|        g1(2:2).le.'R' .and. g1(3:3).ge.'0' .and. g1(3:3).le.'9' .and.       &
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|        g1(4:4).ge.'0' .and. g1(4:4).le.'9' .and. g1(1:4).ne.'RR73'
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| 
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|   i0=index(msg0,' R ') + 3                  !Check for ' R ' in message
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|   g1=msg0(i0:i0+3)//'  '
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|   if(isgrid(g1)) then                       !Check for ' R grid'
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|      call grid2deg(g1,dlong,dlat)
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|      dlong=dlong+180.0
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|      if(dlong.gt.180.0) dlong=dlong-360.0
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|      dlat=-dlat
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|      call deg2grid(dlong,dlat,g2)           !g2=antipodes grid
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|      msg=msg0(1:i0-3)//g2(1:4)              !Send message with g2
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|   else
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|      msg=msg0
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|   endif
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| 
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|   return
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| end subroutine to_contest_msg
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