Re: [sarex] Re: Re: ARISSat-1 and FOX social media fundraising

19 Nov 2010

      Hi Samudra,
We haven't worked this out yet.
73,
Tony AA2TX
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At 06:21 PM 11/18/2010, Samudra Haque wrote:
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Can I ask how many solar panels will be unfurled from the 1U chassis
which has an internal dimension of approx. 87 x 87 mm? Will it be a
symmetric or assymetric arrangement? Will the antenna be embedded into
the extended solar panel?
73 de N3RDX
Samudra
On Thu, Nov 18, 2010 at 4:48 PM, Anthony Monteiro aa2tx@comcast.net wrote:
...
Hi Trevor,
The current plan is to use the same frequency for the FM downlink
and the telemetry beacon. The IHU will have sufficient memory capacity to
hold at least a days worth of data so the beacon would be turned on once
a day for a telemetry dump and then back to transponder mode.
And yes, we plan to use forward error correction on the beacon so
that it will be bulletproof. It will likely be a different format
than the one used on ARISSat-1 since we want a higher bit rate and Fox
will be passive magnetic stabilized (like AO-51) so it will not suffer
from tumble fading like ARISSat might and the interleave length does not
need to be as long.
Thanks for your interest!
Tony AA2TX

At 03:35 PM 11/18/2010, Trevor . wrote:
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--- On Thu, 18/11/10, Andrew Glasbrenner
glasbrenner@mindspring.com wrote:
...
...
...
http://www.amsat.org/amsat-new/images/fck_images/2010_President_Annual_Repor...
...
...
...
Slides 14 through 17
Hi Drew,
Really glad to see that AMSAT-NA is going ahead with the FOX project.
...
From my point of view potentially the valuable part of FOX is the
deployable Solar Panels.
This has never been done on a 1U CubeSat and should significantly
increase the power available. A space proven system to deploy panels
on a 1U sat will benefit not just AMSAT-NA for future projects but
the entire CubeSat community.
Unfortunately I wasn't able to get to the symposium so perhaps you
could clarify one of the slides for me.
Slide 16 mentions both a U/V FM transpoder and a V telemetry beacon.
Is the telemetry beacon on a seperate frequency from the transponder
so both can run at the same time ? Also is the beacon using the
robust narrow band, high efficiently, BPSK system developed for ARISSat-1 ?
I look forward to the launch of ARISSat-1 in the New Year with its
first ever space deployment of a SDX linear transponder, with that
and the Slow Scan TV, its sure to be very popular.
73 Trevor M5AKA

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Anthony Monteiro

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