Re: [amsat-bb] RE: 435 MHz AO-40 Uplink

["Graham Shirville" <g.shirville@xxxxxxxxxxxxxx>]

Leila was also being troubled by lots of Pave Paws radar. I wonder how much
these pulses can actually pull down the AGC level?

It would be nice to have them switched off for just a couple of minutes so
that the change in the AGC level could be recorded....

(Actually it would be nice if they could just be switched off or QSY'd!)

Anyway as it has been a holiday here in the Uk, as elsewhere, it was very
pleasing to here so many stations active on AO40 this morning (at least
until we were all dragged out to attend to the gardening).

It was really wonderful to hear the S2 transmitter passband sounding like a
cross between 80 and 20 meters.

Thanks again to Freddy!

cheers

Graham G3VZV

----- Original Message -----
From: "Stacey E. Mills" <w4sm@yahoo.com>
To: <amsat-bb@AMSAT.Org>
Sent: 01 April 2002 16:19
Subject: [amsat-bb] RE: 435 MHz AO-40 Uplink


> Sunday morning I had no trouble getting a strong
> downlink from AO40 with my
> 435 MHz uplink.
>
> Now (Monday morning) I can barely hear my signal
> coming down.  I could hear
> quite a few other stations very well, and I presume
> that most of them were
> using the 435 MHz uplink.  Did anybody else have
> trouble this morning
> hearing their signal when uplinking on 435 MHz?
>
> Wayne Estes W9AE
> Mundelein, IL, USA
>
> Wayne,
> I think this is purely AGC effect.  Sunday activity
> was essentially US/Canada only and was fairly light
> (surprisingly). The AGC wasn't being hammered very
> hard.  This morning there were LOTS of US/Canadian &
> European stations, some clearly over powered, and the
> AGC was consistently running 12+ dB suppression.
> Leila was hopping from station to station like a
> rabbit on amphetamines and several of these folks
> showed no signs of reducing their power.  Under these
> conditions, your downlink would clearly be reduced in
> strength.
>
>
>
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