[SMCARA] AO-51

Larry Norris unit922 at verizon.net
Sun Dec 4 07:00:04 EST 2011


AMSAT-NA VP Operations, Drew Glasbrenner KO4MA, reports that the amateur 
radio satellite AO-51 has ceased transmission and is not responding to 
commands.

It is with a heavy heart I report that AO-51has ceased transmission and is 
not responding to commands.

The last telemetry data indicated that the third of six batteries was 
approaching failure to short, and observations indicate the voltage from 
three cells is insufficient to power the UHF transmitters. The IHU may 
continue to be operative.

Initial tests with the S band transmitter were also not positive, although 
more attempts are in order. We have tried leaving the satellite in an 
expected state where if voltages climb high enough, the 435.150 transmitter 
may possibly be heard.

The command team will regularly attempt communications with the satellite 
over the coming months (and years). There is always the possibility that a 
cell will open and we could once again talk to our friends while 
illuminated.

Thanks to all who helped fund, design, build, launch, command, and operate 
AO-51. It's 7 year mission has been extraordinary.
Please support AMSAT's Fox-1 project, and other AMSAT projects worldwide 
with your time and money.

Larry Norris
N3JTN  Ham
KAE-4617 GMRS
Leonardtown,Md
A bad day  playing radio is ALWAYS better than a good day working 




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