[amsat-bb] AO-92

[kb2mjeff at att.net]

I second this. L/V mode would certainly beat the batteries up much less due
to the lighter traffic load. I agree with Dave, there are plenty of U/V
passes...

73 Jeff kb2m 

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Andrew Glasbrenner
via AMSAT-BB
Sent: Monday, September 14, 2020 7:08 PM
To: 'David Worboys' <kg4zlb at icloud.com>
Cc: 'AMSAT BB' <amsat-bb at amsat.org>
Subject: Re: [amsat-bb] AO-92

Certainly to be considered...

73, Drew KO4MA

-----Original Message-----
From: David Worboys <kg4zlb at icloud.com>
Sent: Monday, September 14, 2020 6:40 PM
To: Andrew Glasbrenner <glasbrenner at mindspring.com>
Cc: AMSAT BB <amsat-bb at amsat.org>
Subject: Re: [amsat-bb] AO-92

Drew, would it be possible that if you are able command it back on an ad-hoc
basis it could be commanded into L/V mode for those sessions? There are
plenty of U/V opportunities up there for anyone already.

Thanks

David
KG4ZLB



On Sep 14, 2020, at 6:12 PM, Andrew Glasbrenner via AMSAT-BB
<amsat-bb at amsat.org> wrote:

I've mostly been posting about it on Twitter.

AO-92 has a cell that's failing, and towards the end of many eclipses it
goes into auto-safe mode at 3.6v. If the battery drops low enough the IHU
resets, and it comes back up in normal safe mode. Mark and I have been
commanding to repeater mode on the first available pass after the resets,
but it's not a long term sustainable answer. Last night Mark commanded the
transmitter completely off while we consider a plan of action.

Leaving autosafe on and the tx off, we may be able to turn the repeater on
ad-hoc for weekends or such, completely dependent on command station
availability. Turning autosafe and the IHU off like we did with AO-85 will
kill the satellite pretty quickly, so that's not a good response either. So,
we'll look at resets and battery states before this weekend and see where we
stand.

73, Drew KO4MA
AMSAT VP Operations