[amsat-bb] Re: AO-51 mode change and recommendation

George Henry ka3hsw at att.net
Tue Dec 29 09:02:50 PST 2009

I tried the 13:40-ish pass, and also feel that the audio was low...

I'm only working with a quarter-wave ground plane at the moment, and it was 
only a 10 degree pass for me.  I heard a couple of other stations, one of 
which was off-frequency on the uplink.  We'll see what it's like later on a 
higher pass.

George, KA3HSW

PS - Luc:  I heard you come back to me on HO-68 last night, but then there 
was a deep fade and we never completed our exchanges.  (It's a little  hard 
to concentrate on satellite operating when the Bears are actually WINNNG a 

----- Original Message ----- 
From: "Luc Leblanc" <lucleblanc6 at videotron.ca>
To: <amsat-bb at amsat.org>
Sent: Tuesday, December 29, 2009 4:45 AM
Subject: [amsat-bb] Re: AO-51 mode change and recommendation


> On the first 3.9 deg morning pass i was able to hear F6BYJ and an ON 
> station my own downlink was quite distorted even with any
> signal/modulation level.
> On the second pass signal peak at S9 plus 20 but my downlink aidio was 
> rather weak. Signal from the satellite was breaking up but i was
> able to hear my downlink with 5 watts for most of the past but as probably 
> a commanding station was adjusting the levels the near end of
> the pass my audio became extremely weak and seems to never getting back at 
> the AOS to TCA level.
> The first morning low pass audio adjustment produce a very good and clean 
> signal but on the second one audio appears to be muted at AOS to
> TCA and became extremely muted on the second half on the pass to a point 
> where no communication was possible. It is not a signal problem
> but just the audio who seems to be adjusted at the right level.
> No distortion has been noted too.
> The only one problem i was alone for the whole pass speaking to myself...

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