Friends,
AO-85 is putting itself in safe mode towards the end of eclipses as the battery voltage drops. This is a normal behavior programmed to protect the batteries from over-discharge. I just wanted to let everyone know that we are aware, and it's a "to be expected" behavior.
Thanks and 73,
Drew KO4MA
AMSAT VP Operations
Andrew,
Thanks for the info.
However, on this side, just a few minutes ago, I made several tests on AO-85 which was in eclipse and received very well the telemetry and voice (see AMSAT Leaderboard). I guess that in spite in eclipse the battery was charged.
Just a feedback
73
Jean Marc (3B8DU)
On Mar 16, 2018, at 6:05 PM, Andrew Glasbrenner glasbrenner@mindspring.com wrote:
Friends,
AO-85 is putting itself in safe mode towards the end of eclipses as the battery voltage drops. This is a normal behavior programmed to protect the batteries from over-discharge. I just wanted to let everyone know that we are aware, and it's a "to be expected" behavior.
Thanks and 73,
Drew KO4MA
AMSAT VP Operations
Sent via AMSAT-BB@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: http://www.amsat.org/mailman/listinfo/amsat-bb
Hi Drew,
Thanks for letting us know.
I'm curious... Is this a seasonal / yearly / longer-term thing with the orbit, or an indication of a weakening of some of the satellite's components (solar cells, battery)? I presume it didn't do this when first launched, right?
Greg KO6TH
Andrew Glasbrenner wrote:
Friends,
AO-85 is putting itself in safe mode towards the end of eclipses as the battery voltage drops. This is a normal behavior programmed to protect the batteries from over-discharge. I just wanted to let everyone know that we are aware, and it's a "to be expected" behavior.
Thanks and 73,
Drew KO4MA
AMSAT VP Operations
Sent via AMSAT-BB@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: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Andrew Glasbrenner -
Greg D -
Jean Marc Momple