[amsat-bb] Re: [sarex] Re: Re: ARISSat-1 and FOX social media fundraising
aa2tx at comcast.net
Fri Nov 19 03:41:18 PST 2010
We haven't worked this out yet.
At 06:21 PM 11/18/2010, Samudra Haque wrote:
>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
>On Thu, Nov 18, 2010 at 4:48 PM, Anthony Monteiro <aa2tx at 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:
> >>--- On Thu, 18/11/10, Andrew Glasbrenner
> <glasbrenner at mindspring.com> wrote:
> >> >
> >> >
> >> > 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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