This report is worth a read: http://downloads.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP195.pdf
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