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R: PSK tone interesting on AO-40



The PSK tone is changing by a few tens of hertz when the magnetorquing is ON
because of the high courrent in to the magnet coils producing a small drop
of voltage across the battery.

In any case the PSK here using an old for OSCAR-10 ,AMSAT-DL demodulator
(AFDEM-BYTREG-SYNINF)
is perfectly decoded  with CRCC OK blocks on P3T with magnetorquing ON

73 de i8CVS Domenico

----- Original Message -----
From: Howard Long <howard@howardlong.com>
To: <amsat-bb@AMSAT.Org>
Sent: Tuesday, July 03, 2001 9:25 PM
Subject: [amsat-bb] PSK tone interesting on AO-40


> Sitting here in the shack listening to AO-40 (and watching the telemetry)
> tonight, the PSK tone seems to lower by a few tens of hertz for a couple
of
> seconds and then rise back again.
>
> I've never heard this before, but I'm sure someone will be able to
explain.
> Can't see anything obvious from the telemetry myself.
>
> I thought at first it was the down converter I was using, but I get the
same
> on my AR-5000 too.
>
> 73 Howard G6LVB
>
> ----
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>







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