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Re: DSP-12 - a good P3D 400 Bd TLM receive modem



Is it still possible to buy a DSP12??

Dave
At 16:22 9/30/00 -0400, you wrote:
>As a matter of fact, I do have one of these getting dusty, I will file this
>message for the day when I can again pull out my TS790, my DSP-12 and the
>other goodies that worked so well for me in the past.
>Thanks
>
>
>Rudy Benner
>
>
>
>----- Original Message -----
>From: "Bent Bagger" <oz6bl@fern.dk>
>To: "The Amsat Bulletin Board" <amsat-bb@AMSAT.Org>
>Sent: Saturday, September 30, 2000 5:13 AM
>Subject: [amsat-bb] DSP-12 - a good P3D 400 Bd TLM receive modem
>
>
> > Now is the time to dust of that DSP-12 which is sitting on your shelf and
> > prepare for the upcoming launch of P3D, because here is some good news for
> > all you DSP-12 owners: I have uploaded a modified version of the 400 Bd
> > PSK modem for the DSP-12 to the following URL:
> >
> > ftp://ftp.tapr.org/dsp/Motorola/dsp56001/dsp-12.
> >
> > The modification consists of a change to the software so that it sends 514
> > bytes rather than 512 to the listening program. In this way also the CRC
> > bytes will get transmitted to the listening program.
> >
> > The modified modem has been tested by Stacey Mills, W4SM, and he has this
> > to say about the modem:
> >
> > "I burned the new eproms and checked out the 400 baud PSK demodulator with
> > 514 byte capacity. It works very well... Actually, very, very well. In
> > fact, doing some tests with some 400 baud PSK wave files that I have
> > generated, having a calibrated background noise, the DSP-12 functioned as
> > well or better than any other modem I have tested"
> >
> > The file gce201.zip contains these files:
> >
> > READ.ME
> > GCE.V40 - Executable that may be downloaded to the DSP-12
> > GCE.B - PROM image for the B-PROM. Checksum: $1900
> > GCE.D - PROM image for the D-PROM. Checksum: $5000
> > GCE.F - PROM image for the F-PROM. Checksum: $4900
> >
> > Have fun.
> >
> > Best 73 de Bent/OZ6BL
> > (also oz6bl@amsat.org)
> >
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> >
>
>----
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