[amsat-bb] Re: SDR For Satellite Use
Alan P. Biddle
APBIDDLE at UNITED.NET
Thu Sep 15 10:46:20 PDT 2011
I have a Flex VU5K, and it is coming along nicely as a satellite rig. It is
fun, and even useful, to be able to look at the ARISSat-1 downlink. You can
copy telemetry while watching the transponder passband to see if anyone is
on. On Fo-29 and similar linear birds, you don't need to tune around
looking for other stations. They are just there. Click, and QSO!
The Flex can respond to the Kenwood TS-2000 CAT commands, mostly, so it
works with SATPC32 and HRD. There are a few loose ends not implemented, so
you need to set a couple of things manually which would be set automatically
with a real TS-2000. However, there is nothing which prevents you from
using the Doppler control, etc. No doubt the rough edges will be fixed over
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Joel Black
Sent: Thursday, September 15, 2011 6:06 AM
To: Amsat BB
Subject: [amsat-bb] SDR For Satellite Use
I have successfully built and operated my G59 transceiver with GPA10 10W
amp (http://www.genesisradio.com.au/) for 40m JT65a contacts to VK2, 75m
voice contacts in the States, and everything in between.
At some point in the past, some group (TAPR?) had a 2m SDR transceiver.
I have no idea where that information might be.
Does anyone here use SDR for their satellite operation? Maybe using
Flex radios or something else? I don't know that it would matter on the
FM birds, but it would be nice to be able to see the spectrum on the
Joel - W4JBB
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