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CX2SA > SATDIG 14.01.11 21:03l 80 Lines 2522 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V6 25
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Sent: 110114/2002Z @:CX2SA.LAV.URY.SA #:45332 [Minas] FBB7.00e $:AMSATBB625
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: so-50 and ao-51 power management (Mark L. Hammond)
----------------------------------------------------------------------
Message: 1
Date: Fri, 14 Jan 2011 13:25:56 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: so-50 and ao-51 power management
To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<AANLkTim8p2BPnPU0SAKFaEd2zXEBxAm0HEEYqk74hM1J@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I'll add just a bit...
There are something like 8 different voltage settings/thresholds that
interact with the power management and the battery management on
AO-51. And of course, there is 1 or 2 different transmitter power
settings to deal with at the same time. It takes some tweaking to
get it right!
Read a post I made a few days ago...I talk through what AO-51 is doing...
73,
Mark
On Fri, Jan 14, 2011 at 12:23 PM, Andrew Glasbrenner
<glasbrenner@xxxxxxxxxx.xxx> wrote:
> On 1/13/2011 5:55 PM, normn3ykf@xxxx.xx.xxx wrote:
>> Hi all!
>> What power management scheme is used for so-50 and ao-51 when the birds
are eclipsed?
>> thanks,
>> Norm n3ykf
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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>>
> Right now, AO-51 shuts off the transmitters when the battery voltage
> dips below a setpoint, or the panels drop below 14v. It turns back on
> when the battery voltage reaches a separate setpoint.
>
> SO-50 has no power management that I'm aware of, other than the PL tones
> used to activate it. It should be functional in eclipse.
>
> 73, Drew KO4MA
> AMSAT-NA VP Operations
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
>
--
Mark L. Hammond [N8MH]
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
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End of AMSAT-BB Digest, Vol 6, Issue 25
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