Hi Trevor,
The Fox-1 series will support High Speed (up to 9600) downlink. For the Fox-1 we're launching next year, that means that the images from the Virginia Tech camera experiment will be downlinked on the high speed because of their size, and the high speed will also include the same telemetry that the Slow Speed telemetry (sub-audible data under transponder operations) conveys. The High Speed mode must be commanded and will be activated by the AMSAT Operations Team for periods up to 24 hours. Normally the satellite will run in the transponder/Slow Speed data mode. The High Speed mode was designed to be experimental, and the Virginia Tech camera will take advantage of it. The plan is for Fox-1 Series satellites to be able to support our partner's experiments which may require high speed telemetry or data downlink, and in such future cases if the experiment requires high speed all of the time then when the experiment has completed its mission we would turn the satellite back to transponder/slow speed telemetry.
Jerry NØJY
On 5/28/2014 2:31 PM, M5AKA wrote:
The ARRL report on the Fox CubeSat at http://www.arrl.org/news/fox-1-launch-date-slipping-into-summer-of-2015
One thing that surprised me in the article was when they said
"The Phase 1 CubeSats also can handle high-speed digital communications."
My understanding had been that Fox Phase 1 would be low data rate and it would only be the Fox Phase 2 satellites that would support a high date rate (> 19200 kbs ?)
Have I misunderstood ?
73 Trevor M5AKA _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb