[amsat-bb] FOX-1D (AO-92) in safe mode

Don KB2YSI kb2ysi at gmail.com
Mon Aug 24 16:27:13 UTC 2020


Thanks Drew!

On Mon, Aug 24, 2020, 09:32 Andrew Glasbrenner <glasbrenner at mindspring.com>
wrote:

> Hi Don,
>
> All correct, except auto safe mode ends as soon as eclipse does, when the
> bus voltage goes over 3.6. The batteries will charge then for the next 60
> minutes or so until the next eclipse.
>
> As we move to winter in the northern hemisphere, the end of the eclipse
> should shift over the pole and to the beginning of the descending part of
> the orbit, and this issue should change for at least the northern
> hemisphere ops.
>
> 73, Drew KO4MA
> AMSAT VP Operations
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Don KB2YSI via
> AMSAT-BB
> Sent: Monday, August 24, 2020 8:36 AM
> To: John E. Amdor IV <jamdoriv at gmail.com>
> Cc: AMSAT BB <amsat-bb at amsat.org>
> Subject: Re: [amsat-bb] FOX-1D (AO-92) in safe mode
>
> From my very limited knowledge, the batteries are dropping to a voltage
> during eclipse that safe mode is triggered to prevent the batteries from
> discharging too far and thus preventing damage.  Once the satellite is back
> into illumination it should return to normal operations once the batteries
> have charged.
>
> AGAIN, this is MY understanding of the situation, and in no way reflects
> an officatial AMSAT response nor might be accurate.
>
> On Mon, Aug 24, 2020 at 2:35 AM John E. Amdor IV via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
>
> > Today (8/24) at ~4:16 UTC I was attempting to uplink to AO-92 when
> > Veronica announced “FOX-1 Delta, Safe Mode”. Does anyone know what put
> > AO-92 in safe mode, and will this happen every night?
> >
> > KE0NEV
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>
>
> --
> 73,
> Don KB2YSI
> https://www.hamqth.com/kb2ysi
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available to
> all interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
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