Hi Drew,
I'm sure you and the command team have already looked into this, but are there any "knobs" to turn that could indirectly warm up the satellite a bit? What comes to mind is to reduce the Transmit power. I think you used the reverse process to cool off AO-51 earlier this year (higher power draw cools off solar cells).
Just a thought,
Greg KO6TH
From: [email protected] To: [email protected]; [email protected] Date: Tue, 30 Dec 2008 16:26:15 -0500 Subject: [amsat-bb] Re: AO-16 back on and very strong
My pleasure Reid. Up until today I had been optimistic about maybe eeking some sort of continuing operation out of AO-16, but this pass has sort of killed that. We had been getting an orbit or two between shutdowns the last week or so, which led me to think if we could enable it every orbit we'd extend operations. Right now the satellite is in about 79% sun, by this summer that will drop to 68%. Illumination equals heat, and our reset problem is temperature dependent. The temperatures have already dropped enough that the satellite reset twice during that pass; the time you heard, and about 30 seconds after I first turned it on it did the same.
So...we'll have to see if even a large effort will result in any sort of usable operations as we approach that 68% number.
73, Drew KO4MA AMSAT-NA VP Operations
PS Be sure to thank Mark, N8MH, when you hear him on the air. He is usually the one that turns the satellite on in the afternoons, not me!
----- Original Message ----- From: "w4upd" [email protected] To: "Amsat-Bb@Amsat. Org" [email protected] Sent: Tuesday, December 30, 2008 3:58 PM Subject: [amsat-bb] AO-16 back on and very strong
Thanks to the control station turning AO-16 back on. Heard the sequence and then the bird was really kicking butt on its signal. I lowered my power to 5 watts and was still banging in and this with some very "bad" verticals that I have difficulty with on the other birds. Heard to satellite quit during the pass and then obviously, control station came back and turned it on again. Other then some "junk" only a couple of stations were on.
I had a choice of AO-16 or SO-50. No brainer, stuck with AO-16. Good work fellows,
73, Reid, W4UPD
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Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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