[amsat-bb] [Florida Weak Signal Society] 10 meter satellite PSK

Robert Bruninga bruninga at usna.edu
Thu Sep 1 20:52:45 UTC 2016

Its more interesting that that too.

The reason the 28.118 MHz user uplink has Doppler on it, is because he is
using N0SM's pre-compensated Doppler uplink software.  See

With this software, you can run your normal PSK31 software for monitoring
the 435.350 MHz FM downlink and run full duplex with N0SM's TX software
for your 28.1xx uplink.  And the uplink is pre-shifted for Doppler so that
everyone seeing the downlink will see your signal constant.

And since it is full duplex, you can be typing with comments to everyone
in the passband at the same time while watching their comments too.  Bob,

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Andrew
Sent: Thursday, September 01, 2016 3:10 PM
To: Florida Weak Signal Society
Cc: Bob Cutter via Amsat-Bb; Don Hawbaker
Subject: Re: [amsat-bb] [Florida Weak Signal Society] 10 meter satellite

NO-84 has a PSK transponder, 10m up and UHF FM down.

73, Drew KO4MA

> On Sep 1, 2016, at 2:57 PM, Don Hawbaker via FLWSS <flwss at flwss.net>
> I was hearing a station on about 28118 KHz last night running PSK31
calling CQ satellite with drift, but since it says CQ satellite, I guess
it could have been Doppler shift.  Anybody know how this could happen?
> _______________________________________________
> Website http://www.flwss.net
> FLWSS mailing list
> FLWSS at flwss.net
> http://flwss.net/mailman/listinfo/flwss_flwss.net

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