Contributions from the following people:

Joop Stakenborg, PG4I <pg4i at amsat.org> (Code Maintainer)
Rein Couperus, PA0R <pa0r at amsat.org>
Wolf-Ruediger Juergens, DL2WRJ <WJuergens at t-online.de>
Ladislav Vaiz, OK1ZIA <ziav at adela.fel.zcu.cz>
Simon Baldwin, G0FRD <simonb@caldera.com>
