--- On Wed, 30/11/11, Gordon JC Pearce <gordon...@gjcp.net> wrote: > You know, from 50km up you can see a fair chunk of the > earth. While it might not be as cool as flying a > satellite, a balloon-lofted repeater could be quite good > fun. What next, though? Well, maybe a UAV-lofted > repeater. I wonder how well a combination of a balloon > for the heavy lifting with a UAV-based payload for > station-keeping would work?
I believe there are problems with maintaining a High Altitude Platform in position above 25 km. Current research is based on platforms between 17 and 22 km high. At that height they could provide coverage over a radius of up to 500 km. In the UK we have the drawback that aeronautical amateur radio systems are not permitted by our regulator. http://www.elec.york.ac.uk/research/comms/haps.html http://www.port.ac.uk/research/telecoms/researchareas/satellitecommunications/highaltitudeplatformnetworks/ 73 Trevor M5AKA _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
