21 lines
620 B
Fortran
21 lines
620 B
Fortran
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subroutine encode4(message,ncode)
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use packjt
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parameter (MAXCALLS=7000,MAXRPT=63)
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integer ncode(206)
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character*22 message !Message to be generated
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character*3 cok !' ' or 'OOO'
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integer dgen(13)
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integer*1 data0(13),symbol(216)
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call chkmsg(message,cok,nspecial,flip)
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call packmsg(message,dgen,itype,.false.) !Pack 72-bit message into 12 six-bit symbols
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call entail(dgen,data0)
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call encode232(data0,206,symbol) !Convolutional encoding
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call interleave4(symbol,1) !Apply JT4 interleaving
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do i=1,206
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ncode(i)=symbol(i)
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enddo
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end subroutine encode4
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