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[jamsat-news:3026] ANS-333 Special Bulletin - AO-51 End of Mission

SB SAT @ AMSAT $ANS-333.01
AO-51 End of Mission

AMSAT News Service Bulletin 331.01
November 27, 2011
BID: $ANS-331.01

AMSAT-NA VP Operations, Drew Glasbrenner, KO4MA reported today, 
"It is with a heavy heart I report that AO-51 has ceased trans-
mission and is not responding to commands."

Drew wrote, "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 friend while illuminated. Thanks to all who helped fund, des-
ign, 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 world-
wide with your time and money.

[ANS thanks the AO-51 Command Team for the above information]


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