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Re: Soundcard Decoder for UO-11?



I would consider re-publishing the article in OSCAR Satellite Report IF:

1. I had the article.
2. We could get permission - The callsign G3RUH sounds familiar - still
around?

Gene Harlan - WB9MMM
ATVQ & OSR
ATVQ@hampubs.com

----- Original Message -----
From: Peter Jordahl <k5gm@prismnet.com>
To: 'Laura Halliday' <lha@sdr.utias.utoronto.ca>
Cc: 'amsat-bb@AMSAT.org' <amsat-bb@AMSAT.Org>
Sent: Thursday, November 18, 1999 10:33 PM
Subject: RE: [amsat-bb] Soundcard Decoder for UO-11?


> Yes, I would like to see it available.  It sounds very instructive, in
> terms of techniques, not necessarily in terms of actual hardware to be
used
> today.
>
> -----Original Message-----
> From: Laura Halliday [SMTP:lha@sdr.utias.utoronto.ca]
> Sent: Thursday, November 18, 1999 10:50 AM
> To: amsat-bb@AMSAT.Org
> Subject: Re: [amsat-bb] Soundcard Decoder for UO-11?
>
> At 05:41 PM 17/11/99 -0500, John Magliacane wrote about an old article
> by G3RUH:
>
> >This is an EXCELLENT article!  I built a slightly updated version of this
> >demodulator UO-9 and UO-11 decoding, and found that it performed better
in
> >the presence of noise than a homebrew PLL (XR2211-based) demodulator I
> >had been using.  The description of this article helped me greatly to
> >understand correlation decoding, and to eventually design PSK and FSK
> >modems that I now use for AO-16 and KO-25 communications.
>
> Assuming the copyright issues could be sorted, do people perceive value
> in reprinting this article somewhere? It's awfully good, and probably more
> accessible to an amateur audience than the equivalent treatment in a
> typical communications textbook.
>
> I remember reading about the then-new Kansas City cassette tape standard
> in the I/O section of 73. Does that date me or what? :-)
>
> Laura Halliday VA3LDH   "Que les nuages soient notre pied
> Grid: FN03gs                a terre..." - Hospital/Shafte
> ----
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