[amsat-bb] Re: Turksat transponder

[Dave WØDHB]

Update based on 18:50 pass

A keyed carrier goes through the transponder. 
With both RX and TX Doppler shifting, Carrier Downlink shifts upward in
frequency at a rate faster than Doppler shift.

Shot of Panadapter showing downlink signal

https://www.dropbox.com/s/bfx9d4x5n2eg60q/TurkSat.pdf 

Dave W0DHB


-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Dave WØDHB
Sent: Friday, April 26, 2013 11:32 AM
To: AMSAT-BB at amsat.org
Subject: [amsat-bb] Turksat transponder

Was able to hear my carrier thru the Turksat transponder on 17:20 pass at
DN70

Behavior was strange, almost behaved like it wasn’t inverting (it is
inverting, correct ?).

SSB did not come through cleanly.

 

TX/RX offset varied during the pass.

 

I will be better prepared for 18:49 pass and get some panadapter  screen
shots.

 

May also try BUGCUBE that pass



Dave W0DHB

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