[amsat-bb] Re: AO-16 back on and very strong

[Greg D.]

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: glasbrenner at mindspring.com
> To: updwrb at bristor-assoc.com; amsat-bb at amsat.org
> 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" <updwrb at bristor-assoc.com>
> To: "Amsat-Bb at Amsat. Org" <amsat-bb at amsat.org>
> 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 AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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