Hi All,
The last few passes of AO-7 (Mode B) have been extremely QRP. I have not even been able to discern the the usual peak noise nodes on the passband. Anyone else have similar observations? Perhaps related: the beacon has not been heard for several weeks. Hoping for the best.
73 John Meeks KC8ZFN
Hi John & Amsat's
yes indeed, I agree with your note.
Probably it wasn't Mode-B, but Mode-C.
73, Mak SV1BSX
----- Original Message ----- From: "John Meeks" jmeek@harbor.gaslightmedia.com To: amsat-bb@amsat.org Sent: Monday, October 08, 2007 04:56 Subject: [amsat-bb] AO-7 Weak signal
Hi All,
The last few passes of AO-7 (Mode B) have been extremely QRP. I have not even been able to discern the the usual peak noise nodes on the passband. Anyone else have similar observations? Perhaps related: the beacon has not been heard for several weeks. Hoping for the best.
73 John Meeks KC8ZFN
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In the three minutes before AO-7 switched to Mode A there was a marked increase in the downlink signal. The switch occured at ~0141z. Prior to this timeframe I heard some CW just over the noise but could not copy. QSO with WA6DIR was interupted with the mode change.
I can't determine if the increased signal was due to a shift in relative polarization or an AO-7 internal process, but it's orbital path was more or less parallel to the sun line at about 48 degrees latitude. It might be of interest to gather more observations just before mode changes.
KC8ZFN John
participants (2)
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John Meeks -
SV1BSX