Since the changes made to AO-51 the other day, it appears I am having more difficulty in copying the bird than others on this list server. Tonight during the 22:22UTC pass which was at an maximum elevation of 60 degress I was not able to hear the bird as well as I have in the past. The signals had more fade and were about 1/3 of what they use to be. Again, my present antennas have a lot to be desired as I am using a 2 meter homebrew ground plane for the 435.300 reception. Before the changes, this worked reasonable well, now it appears I'll need to do something different and improve the reception antenna. I am assuming the downlink power is still reasonable.
Just a report of how I seem to fair (or not) with the recent orientation changes of AO-51.
Reid, W4UPD
I noticed the same thing here. I only have a modest eggbeater antenna setup. Since that AO-51 changed, I found very difficult to hear now.... and I was not able to transmit in the last 50 deg pass... not much good receive.
J-FVA2SS
2009/12/5 w4upd updwrb@bristor-assoc.com:
Since the changes made to AO-51 the other day, it appears I am having more difficulty in copying the bird than others on this list server. Tonight during the 22:22UTC pass which was at an maximum elevation of 60 degress I was not able to hear the bird as well as I have in the past. The signals had more fade and were about 1/3 of what they use to be. Again, my present antennas have a lot to be desired as I am using a 2 meter homebrew ground plane for the 435.300 reception. Before the changes, this worked reasonable well, now it appears I'll need to do something different and improve the reception antenna. I am assuming the downlink power is still reasonable.
Just a report of how I seem to fair (or not) with the recent orientation changes of AO-51.
Reid, W4UPD
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
My experience copying AO-51 using a ground plane antenna today was similar.
Regards Mark VE7AFZ.
----- Original Message ---- From: w4upd updwrb@bristor-assoc.com To: amsat-bb AMSAT-BB@amsat.org Sent: Sat, December 5, 2009 2:40:57 PM Subject: [amsat-bb] AO-51 reception report
Since the changes made to AO-51 the other day, it appears I am having more difficulty in copying the bird than others on this list server. Tonight during the 22:22UTC pass which was at an maximum elevation of 60 degress I was not able to hear the bird as well as I have in the past. The signals had more fade and were about 1/3 of what they use to be. Again, my present antennas have a lot to be desired as I am using a 2 meter homebrew ground plane for the 435.300 reception. Before the changes, this worked reasonable well, now it appears I'll need to do something different and improve the reception antenna. I am assuming the downlink power is still reasonable.
Just a report of how I seem to fair (or not) with the recent orientation changes of AO-51.
Reid, W4UPD
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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Reid, I refer you to ANS-340 posted recently to the -bb. The FLIP experiment has been a success. Additionally, A number of positives and negatives have resulted from the experiment. Positives. AO-51 has increased its spin rate. Reception in the Southern Hemisphere is much improved. Negatives The antennae are not favouring the Northern Hemisphere, hence signals are down. The flip has introduced a significant precession component that is affecting reception in the Northern Hemisphere, through fading and polarisation changes.
The Command Team are waiting for AO-51 to stabilise, prior to executing another FLIP, to return AO-51 to its normal attitude.
73 Colin VK5HI. Member - AO51 Control Team.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org]On Behalf Of w4upd Sent: Sunday, 6 December 2009 09:11 To: amsat-bb Subject: [amsat-bb] AO-51 reception report
Since the changes made to AO-51 the other day, it appears I am having more difficulty in copying the bird than others on this list server. Tonight during the 22:22UTC pass which was at an maximum elevation of 60 degress I was not able to hear the bird as well as I have in the past. The signals had more fade and were about 1/3 of what they use to be. Again, my present antennas have a lot to be desired as I am using a 2 meter homebrew ground plane for the 435.300 reception. Before the changes, this worked reasonable well, now it appears I'll need to do something different and improve the reception antenna. I am assuming the downlink power is still reasonable.
Just a report of how I seem to fair (or not) with the recent orientation changes of AO-51.
Reid, W4UPD
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (4)
-
Colin Hurst -
Jean-François Ménard -
Mark Spencer -
w4upd