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Date: Mon, 1 Feb 2016 17:18:05 +0000
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From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@yahoogroups.co.uk, rsgb_lf_group@blacksheep.org
Subject: LF: WOLF Coding
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I'm contemplating writing some PIC code to encode WOLF (the software) into
a PIC to make a standalone beacon transmitter source.   A generator for the
rate 1/6  32 constraint length  convolutional code will fit into a 16F628A
chip  without too much difficulty - I've already done it for JT4 and WSPR;
it just needs more parallel shift registers and less message memory than
those modes do.

Looking back though the archives of various progs written over the years, I
found one written back in 2010 that generates the bit pattern for a WOLF
message.   So back then,  must have been thinking of doing something with
WOLF but it never got beyond a basic coder.   To be able to write that
software I must have had the original source code by John / team or Wolf
(the operator!) for the mode, but can't find it.

Also have a bit of a conundrum - in that  software I provided the option
for interleaving the final data or not, but don't know if the current Wolf
GUI software implements interleaving or not.

This is the interleaving code I wrote back then  (PowerBasic language,
 variables here are all long ints) but don't know if its currently
implemented in the latest versions

IF interlv THEN
                tempj = j
                SHIFT RIGHT tempj , 3
                PTR = k * 80 + (j AND 7) * 10 + tempj + i * 2
            ELSE
                PTR = k * 80 + j + i * 16
            END IF
  outdata(PTR) = b


Is the WOLF source code available anywhere, and is interleaving
implemented?

Also, is there an option somewhere to generate a file or even a screen
showing of the output bit pattern?
Short of actually running WolfGUI with a test message, recording the output
and comparing it with my generated sequence for the same message it's
difficult to know if my software gives the right answers.

Andy  G4JNT

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<div dir=3D"ltr"><div>I&#39;m contemplating writing some PIC code to encode=
 WOLF (the software) into a PIC to make a standalone beacon transmitter sou=
rce. =C2=A0 A generator for the rate 1/6 =C2=A032 constraint length =C2=A0c=
onvolutional code will fit into a 16F628A chip =C2=A0without too much diffi=
culty - I&#39;ve already done it for JT4 and WSPR; it just needs more paral=
lel shift registers and less message memory than those modes do.</div><div>=
<br></div><div>Looking back though the archives of various progs written ov=
er the years, I found one written back in 2010 that generates the bit patte=
rn for a WOLF message. =C2=A0 So back then, =C2=A0must have been thinking o=
f doing something with WOLF but it never got beyond a basic coder. =C2=A0 T=
o be able to write that software I must have had the original source code b=
y John / team or Wolf (the operator!) for the mode, but can&#39;t find it.<=
/div><div><br></div><div>Also have a bit of a conundrum - in that =C2=A0sof=
tware I provided the option for interleaving the final data or not, but don=
&#39;t know if the current Wolf GUI software implements interleaving or not=
. =C2=A0=C2=A0</div><div><br></div><div>This is the interleaving code I wro=
te back then =C2=A0(PowerBasic language, =C2=A0variables here are all long =
ints) but don&#39;t know if its currently implemented in the latest version=
s</div><div><br></div><div><div>IF interlv THEN</div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 tempj =3D j</div><div>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 SHIFT RIGHT tempj , 3</div><div>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 PTR =3D k * 80 + (j=
 AND 7) * 10 + tempj + i * 2</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 ELSE</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 PTR =3D k * 80 + j + i * 16</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 END IF</div><div>=C2=A0 outdata(PTR) =3D b</div></div><div><br><=
/div><div><br></div><div>Is the WOLF source code available anywhere, and is=
 interleaving implemented? =C2=A0</div><div><br></div><div>Also, is there a=
n option somewhere to generate a file or even a screen showing of the outpu=
t bit pattern?</div><div>Short of actually running WolfGUI with a test mess=
age, recording the output and comparing it with my generated sequence for t=
he same message it&#39;s difficult to know if my software gives the right a=
nswers.<br></div><div><br></div><div>Andy =C2=A0G4JNT</div></div>

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