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Re: Satellite packets systems question



On Sun, 17 Oct 1999, Bob Bruninga wrote:

> On Sun, 17 Oct 1999 KB8QIR@aol.com wrote:
> 
> >  After looking around the AMSAT-NA site about packet satellite systems I
> > am at  a loss for the term BPSK as listed for AO-16,LO-19,and IO-26. Was
> > looking at  a receive system for APRS via these satellites. It gets
> > boring to transmit and not receive anything...
> 
> BPSK means bi-phase-shift-keying.  Its a subset of Phase-Shift-Keying..
> These satellites have been in orbit for about 10 years and are thoroughly
> docummented in the AMSAT and Amateur Radio literature.  THey require an
> all-mode (SSB) receiver and PSK demodulator.  There should be many
> places to look for help..

Including AMSAT-NA's web site.  I recently added two previously published
articles to AMSAT's web site, including:

	http://www.amsat.org/amsat/articles/kd2bd/Pacsat_Modem/

that describes my 1200 baud Pacsat Modem, and

	http://www.amsat.org/amsat/articles/kd2bd/Digital/

that describes the various protocols and modulation types used by Pacsat
satellites.

Hope it helps!


73, de John, KD2BD

--
-=-=-=-=-=-=-=-=-=-=-=-=- John A. Magliacane, KD2BD -=-=-=-=-=-=-=-=-=-=-=-=-
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