[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

RE: New South African Satellite



--- Mark Saurman <vo1one@gmail.com> wrote:
>What about a Molniya orbit?  Some passes high altitude with a large
>footprint but weaker signals requiring more elaborate equipment to
>work, and some passes low altitude with strong signals workable by HT
>with a quarter wave duck.

The emphasis would be on coverage of the continent of Africa esp South 
Africa. With a 63 degree Molniya orbit SA would always get poor coverage.

There is little doubt that a 1450 km orbit such as Oscar-7's would be a good 
choice as that provides a reasonable coverage area and a pass time of up to 
20 minutes. A 4500 km high orbit would also be interesting but the drawback 
to both of them is finding a launcher to get to those orbits. Sure you could 
in theory put a motor on the satellite and get to the orbit you want but 
it's non-trivial and very few Amateur satellites have done this.

73 Trevor M5AKA
---------------
Icom IC-V82 Competition: http://www.southgatearc.org/competitions/ic-v82.htm
Daily Amateur Radio RSS News Service: http://www.southgatearc.org/
Add News Service to your Website: http://www.southgatearc.org/rss/index.htm
Add News Service to your PC: http://www.southgatearc.org/rss/newsreader.htm
Upload Your News Items: http://www.southgatearc.org/news/your_news.htm
---------------
----
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org



AMSAT Top AMSAT Home