[amsat-bb] Re: AO-51, is there an expected state when the voltage is high enough

Andrew Glasbrenner glasbrenner at mindspring.com
Tue Nov 29 13:09:23 PST 2011

It's not so much a problem of not enough illumination, but more that we 
are running on 3 or 3.5 cells, and we need ~4 to make the transmitters 
work. There may be some points during the orbit when the V gets high 
enough for the transmitter to come on at low power, but that is 
conjecture only. We don't know when or really even if that will happen.

If a cell opens up in the future, the IHU will immediately crash upon 
eclipse, and the battery voltage -may- rise to whatever the panels can 
provide. If this happens we may be able to restart the IHU and get a 
transmitter running, but it will only last until the next eclipse.

73, Drew KO4MA

PS. I note that the UK-DMC1 satellite was retired today after 8 years in 
orbit due to battery condition. We are almost as good as the mega-dollar 

On 11/29/2011 3:49 PM, PE0SAT wrote:
> Hi,
> Thanks for reading.
> Is there an expected state when the voltage is high enough regarding AO-51.
> The reason I ask, is to listen and see if there is some life in the
> satellite when the voltage becomes high enough when there is full exposure
> after the coming eclipse periode.
> 73 Jan PE0SAT

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