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

[Anthony Monteiro]

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:
> > 
> http://www.amsat.org/amsat-new/images/fck_images/2010_President_Annual_Report%281%29.pdf
> >
> > 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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