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Drew has brought up a good point. Anything is possible
here is some data that may help those of you who wish
to do a little snooping on AO-10 as it swoops through
perigee passes.
AO-10 (Phase-III B) June 16th 1983 - ....
General Beacon 145.810 (2W, unmod. carrier) Mode-B
Engineering Beacon 145.987 (4W, switched off) Mode-B
General Beacon 436.040 (2W, switched off) Mode-L
Engineering Beacon 436.020 (2W, switched off) Mode-L
Mode-B Uplink 435.180 - 435.030 CW/LSB
Mode-B Downlink 145.825 - 145.975 (50W PEP) CW/USB
Mode-L Uplink 1269.85 - 1269.05 (not active) CW/LSB
Mode-L Downlink 436.15 - 436.95 (not active) CW/USB
Keith N6ORS
>Andrew Glasbrenner wrote:
>
> I was digging around today looking at AO-10 info. I had never seen any
> reference before to a L/U transponder on AO-10, but did today at
> http://www.ee.surrey.ac.uk/SSC/SSHP/data_ao10.html
>
> Frequency plan: Transponder U: 435.1 MHz (uplink), 145.9 MHz (downlink),
> Bandwidth +/- 75 kHz. Transponder L: 1269.45 MHz (uplink), 436.55 MHz
> (downlink), bandwidth +/- 400 kHz. Two beacons adjacent to passband.
>
> If the antennas sometimes flip from hi to low gain randomly, could the
> transponder have also flipped from mobe B to L/U?
>
> Just wishful thinking probably....
>
> 73, Drew KO4MA
>
> ----- Original Message -----
> From: "Keith N6ORS" <k2@pe.net>
> To: "amsat" <amsat-bb@AMSAT.Org>
> Sent: Sunday, April 06, 2003 11:21 AM
> Subject: [amsat-bb] AO10 when?
>
> > Hello fellow sat nuts,
> > I have tried that test a few times William, listening and watchin the dsp
> > just as A0-10 came out of perigee, i was dissapointed.
> > But as Scott says, After AO-07 we can never really count them as dead.
> > A0-10 was a pretty tough bird, Radiation got it early because of its
> > orbit. It made long passes through the Van Allen belts. I myself dont
> > believe it is truly gone, i think maybe the logic flipped a few relays
> > and so it is temporarly out of service. Hopefully someday they will be
> > flipped back and we will once again hear 'The old soldier' as John
> Branegan
> > affectionately called it.
> >
> >
> >
> > Keith
> > N6ors
> > ----
> > Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> > Not an AMSAT member? Join now to support the amateur satellite program!
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> >
----
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