Use ARRL Bulletins to setup RTTY decoders!

From: (BobForrest)
Date: 3 Mar 1997 15:05:02 GMT
Organization: AOL http://www.aol.com
Newsgroups: rec.radio.shortwave

On Sun, 02 Mar 1997 13:07:15 -0800, Unabong  wrote:

>I just spent $170 on the MFJ MultiReader decoder.
>it allegedly decodes: CW RTTY 170 RTTY
>425 RTTY 850 ASCII and AMTOR FEC.

>when I attempt to decode something with it,
>it looks something like this:

>CWB__886TTTTTTYQWX<---WXQXPP

Try  the ARRL teleprinter bulletins on the ham bands. Also From their web 
site at: http://www.arrl.org/w1aw/


day    utc        freq 
-----  ----      ---------------------------------------------------------

THURS  1600  on  3.625, 7.095, 14.095, 18.1025, 21.095, 28.095, 147.555 MHz.

FRI    1600  on  3.625, 7.095, 14.095, 18.1025, 21.095, 28.095, 147.555 MHz.

DAILY  2300  on  3.625, 7.095, 14.095, 18.1025, 21.095, 28.095, 147.555 MHz.

DAILY  0500  on  3.625, 7.095, 14.095, 18.1025, 21.095, 28.095, 147.555 MHz.


Bulletins are sent at 45.45-baud Baudot and 100-baud AMTOR, FEC Mode B,
110-baud ASCII will be sent only as time allows.

That should give you a good shot. I used to operate a ham station at a
musuem. When training new operators, I found it took some hams a while to
get the hang of tuning digital signals. Their biggest problem was tuning
the decoder to harmonics, (the display will peak on them as well). Also on
some decoders, input levels are very critical, as they are very sensitive
to distortion.

Bob Forrester NS3Z

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