[amsat-bb] AO-92: Lack of beacon

[Yono Adisoemarta]

Mark,

Thanks for the explanation and the path forward to prolong the life of AO-92.

73 de Yono - YD0NXX 


Sent from my iPhone

> On Sep 19, 2020, at 8:08 PM, Mark Hammond <marklhammond at gmail.com> wrote:
> 
> Hello Yono,
> 
> Due to what looks like a failing cell in the battery, if AO-92 is in SAFE mode (like is AO-95), during eclipse the transmitter coming "ON" to beacon every couple minutes apparently drops the voltage to a point that a reset occurs.   Then, the satellite is still in SAFE mode, so next orbit in eclipse, it repeats.  That is what the pattern looks like.  It seems not productive and likely to be harmful to that cell and the battery.
> 
> So, by turning the transmitter OFF, it looks like that prevents the reset cycles every orbit.  This should be better for the battery, and may extend our enjoyment of AO-92 in occasional repeater mode--even if that requires us to manually turning it ON or OFF, for special events or occasions.
> 
> Hope that information is helpful.
> 
> 73,
> 
> Mark N8MH (Command station)
> 
>> On 9/19/2020 12:11 AM, Yono Adisoemarta via AMSAT-BB wrote:
>> I guess I should’ve follow-up on that posting as I read and understand one battery cell is failing .
>> 
>> The question is why not treat similar to AO-95 with beacon active while permanently in Safe Mode, to minimize stress on the remaining good cells .
>> 
>> 73 de Yono - YD0NXX
>> 
>> 
>> Sent from my iPhone
>> 
>>>> On Sep 19, 2020, at 10:25 AM, KI7UNJ Tucker <ki7unj at gmail.com> wrote:
>>> 
>>> 
>>> This has been answered multiple times via the BB
>>> 
>>> https://www.amsat.org/pipermail/amsat-bb/2020-September/079702.html
>>> 
>>> It is being kept offline UFN, till a plan is worked out.
>>> 
>>>> On Fri, Sep 18, 2020 at 8:10 PM P. Suryono Adisoemarta via AMSAT-BB <amsat-bb at amsat.org> wrote:
>>>> Dear all,
>>>> why AO-92 is totally quiet in the past couple of days? Can the beacon be activated so we can keep take a look on its condition, similar with AO-95.
>>>> 73 de Yono - YD0NXXJakarta, Indonesia
>>>> _______________________________________________
>>>> 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.
>>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>>>> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>>> 
>>> -- 
>>> Casey Tucker  KI7UNJ
>>> https://twitter.com/KI7UNJ
>>> 
>> _______________________________________________
>> 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.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
> 
> -- 
> Mark L. Hammond [N8MH]
>