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Fix rendering of examples in jt65code man page.

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4255 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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Bill Somerville 2014-09-05 18:53:55 +00:00
parent cfaf620ce5
commit 90d92a47d7
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7
manpages/man1/jt65code.1.txt
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@ -11,6 +11,7 @@ jt65code, jt9code - Weak signal communications encoding support utility.
== SYNOPSIS
*jt65code* MESSAGE
*jt9code* MESSAGE
== DESCRIPTION
@ -27,6 +28,7 @@ sync tone. The total number of symbols in a transmitted message is
enclosed in quotes. In Windows the command and program output might
look like this:
.....
$ jt9code "G0XYZ K1ABC FN42"
Message: G0XYZ K1ABC FN42
Channel symbols:
@ -34,6 +36,7 @@ Channel symbols:
8 7 0 6 0 1 8 3 3 7 8 1 1 2 4 5 8 1 5 2 0 0 8 6 0 5 8 5 1 0
5 8 7 7 2 0 4 6 6 6 7 6 0 1 8 8 5 7 2 5 1 5 0 4 0
Decoded message: G0XYZ K1ABC FN42
.....
For the corresponding program jt65code only the information-carrying
channel symbols are shown, and the symbol values range from 0 to
@ -45,6 +48,7 @@ A typical execution of jt65code is shown below. The program displays
the packed message of 72 bits, shown here as 12 six-bit symbol values,
followed by the channel symbols:
.....
$ jt65code "G0XYZ K1ABC FN42"
Message: G0XYZ K1ABC FN42
Packed message, 6-bit symbols: 61 36 45 30 3 55 3 2 14 5 33 40
@ -53,12 +57,14 @@ Information-carrying channel symbols:
41 58 35 8 35 3 24 1 21 41 43 0 25 54 9 41 54 7 25 21 9
62 59 7 43 31 21 57 13 59 41 17 49 19 54 21 39 33 42 18 2 60
Decoded message: G0XYZ K1ABC FN42
.....
For an illustration of the power of the strong error-control coding in
JT9 and JT65, try looking at the channel symbols after changing a
single character in the message. For example, change the grid locater
from FN42 to FN43 in the JT65 message:
.....
$ jt65code "G0XYZ K1ABC FN43"
Message: G0XYZ K1ABC FN43
Packed message, 6-bit symbols: 61 36 45 30 3 55 3 2 14 5 33 41
@ -67,6 +73,7 @@ Information-carrying channel symbols:
51 32 56 39 35 3 50 48 30 8 5 40 18 54 9 24 30 26 61 23 11
3 59 7 7 39 1 25 24 4 50 17 49 52 19 34 7 4 34 61 2 61
Decoded message: G0XYZ K1ABC FN43
.....
You will discover that every possible JT65 message differs from every
other possible JT65 message in at least 52 of the 63