[amsat-bb] Correction: New Satellite Observations.

Colin Hurst cjhurst at bigpond.net.au
Mon Apr 28 06:53:14 PDT 2008

Having listened to a recording of the pass mentioned below, the chirpy
signal is crystal locked, but the doppler shift deviated significantly from
the auto-tuning, which suggests the keps in use need some refinement.
Unfortunately the two signals are only 300 Hz apart.
>From the chirpy signal I was able to decode from the start of a sequence
Apologies about jumping to the conclusion about the crystal.
Colin VK5HI

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org]On
Behalf Of Colin Hurst
Sent: Monday, 28 April 2008 10:41 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] New Satellite Observations.

Observations from the pass 1242 UTC to 1255 UTC, over VK.
Copied two CW signals on nominal 437.275.
One was very unstable and chirpy with slow CW, the other was clean, fast
CW, but quite weak in signal strength. The unstable signal drifted down the
band very quickly, definitely not crystal locked.
Also copied SEEDS on nominal 437.485, but may be slightly lower in
Signal clean but very weak. Visible on Spectran but not decode-able.
This pass was in Eclipse.
Used auto-tracking throughout the pass, which may have been a retrograde
Colin VK5HI.

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