Hi Beat,
Recently users of WSJT-X have started seeing decoded messages of the
form "CQ 000 K1ABC FN42". As far as I can tell, these messages arise
because of a change you made in line 47 of a file "packmsg.f"
if(msg(1:3).eq.'DX ') msg='CQ 000 '//msg(4:)
I did not look further in your source code, but presumably you made a
corresponding change in the unpack routine to display the message as,
for example, "DX K1ABC FN42".
Your change is not consistent with the JT65 protocol as defined several
years ago after discussion with Joe Large, W6CQZ -- and as implemented
in WSJT and WSJT-X. Obviously it will cause problems if one program
intending to be "JT65 compatible" uses different source encoding than
another program.
The JT65 protocol is effectively defined and demonstrated by the program
"JT65code", available as part of the standard WSJT-X installation. As
shown in the terminal output below, messages of the form "CQ DX K1ABC
FN42" are fully supported.
#####################################################################
> jt65code "CQ DX K1ABC FN42"
Message Decoded Err?
-----------------------------------------------------------------
CQ DX K1ABC FN42 CQ DX K1ABC FN42 1: Std Msg
Packed message, 6-bit symbols 21 34 19 3 39 55 3 2 14 5 33 40
Information-carrying channel symbols
5 57 50 57 46 8 24 12 46 42 5 20 60 2 46 26 47 40 12 17 18
60 5 38 50 11 50 40 26 29 60 34 25 44 47 59 6 26 41 39 15 54
19 43 61 22 55 17 30 44 54 21 34 19 3 39 55 3 2 14 5 33 40
#####################################################################
I hope you will see fit to make JT65-HF-HB9HQX-Edition conform with
standard JT65 usage and avoid this incompatibility between popular
programs that are intended to work together.
-- 73, Joe, K1JT
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