[amsat-bb] Re: Can we get them to fix AO-40 first then?

jari.koivurinne@aina.net jari.koivurinne at aina.net
Sun Oct 11 22:50:23 PDT 2009

> I'm no expert on AO-40, but to the best of my knowledge, the solar panels
> are not retractable - they are fixed in place.  The satellite cannot be
> commanded "on", as the shorted batteries shunt virtually all of the solar
> panel output, such that either the command receiver is not operating at
> all,
> or there is simply not enough juice to switch anything.  Our best hope is
> that someday, the batteries will fail open, just as AO-7's batteries did,
> and AO-40 comes back to life when adequately illuminated.
> George, KA3HSW

Four of the solar panels are retractable but not released. Please see some
old pictures.
As the orientation of AO-40 is not known it is better that the panels are
kept around the satellite. If they still exists...
There is enough power from a single panel to run IHU and some beacon if
the bus wires and electronics are not damaged. Some sensors indicated that
sun is shining into the satellite so there may be big hole(s) in it.
Not sure about that raport though. Have to check out that.
The beacons were loud with the omnis and data was easily received with
rubber duck and hand held radio. Miss that fine telemetry sound.

I have allways said that the world would be different if AO-40 were alive.

Jari, OH3UW

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