[amsat-bb] Reception report of AO-73

[alancresswell at xtra.co.nz]

Solid telemetry over ZL on the 2112 UT and 2249 UT passes. (Not in eclipse) 
There was some minor scintillation late in the pass but that is not 
particularly unusual as it gets well to the South.
The latest Solar Alert email I received indicated that "charging of 
satellites systems" was to be expected so indeed this may have affected 
AO-73.

73
Alan
ZL2BX

-----Original Message----- 
From: Paul Stoetzer
Sent: Friday, April 17, 2015 1:48 AM
To: David
Cc: amsat-bb at amsat.org
Subject: Re: [amsat-bb] Reception report of AO-73

David,

There is a major geomagnetic storm ongoing at the moment (K index = 6)
which could account for some of the signal distortion through the
atmosphere. This solar storm started yesterday and it wouldn't
surprise me if it was responsible for AO-73 shutting down and needing
to be reset.

The next pass here is at 02:51 UTC. I will be listening.

73,

Paul, N8HM

On Thu, Apr 16, 2015 at 7:05 PM, David <at746david at gmail.com> wrote:
> Hi from David EA4SG.
>
> I send this short AO-73 SWL report hoping it could be useful to the
> AO-73 Command Team.
>
> In the lasts two orbits (#7434 and #7435) over my QTH located in
> Colmenar Viejo (Madrid) locator IN80CP, the bird reached AOS with the
> transponder ON as expected, downlink signal was slightly weaker than
> usual, modulation was quite distorted (similar to the one we get from
> AO-7) and transponder switched off exactly at the expected "ilumination
> time" (20:31UTC  and 22:08UTC).
>
> I was also listening to the telemetry and it was affected by the above
> mentioned distorsion too. I didnt try, but I am sure that this
> distortion will make telemetry harder to be decoded.
>
> Best 73s de David EA4SG
>
>
>
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_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions 
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AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb