[amsat-bb] Re: A considerate operating practice on FM (one channel)satellites

JoAnne Maenpaa k9jkm at comcast.net
Mon Jan 28 22:00:34 PST 2008

> Likewise....trying to connect to the ISS BBS during PRIMETIME HOURS.

Perhaps it's a bit of assuming spacecraft packet operations run like the
1990's terrestrial PBBS network.  Those did generally require a "hard
connect" and served a single user at a time.

There is no real traffic on the ISS PBBS.  All of the action is the UI
digipeater on 145.825 MHz.  There are a few parameter settings for your TNC
that differ from terrestrial operation.  I tried to summarize this at:

Right now my page contains only the external TNC-2 configuration.  I'd be
happy to add links to pages explaining 'UI digi' via the ISS for the D700
radios and soundcards if ya'll could mention those.

The log at http://www.ariss.net/ shows 100's of stations enjoying UI
operation but those few attempts at a hard connection can be a showstopper
for the rest of a pass.

73 de JoAnne K9JKM
k9jkm at amsat.org

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