The hobbyists who have only 'receivers' and monitor HF and VHF are probably a wider audience than those who transmit and receive. Here is a typical site: http://www.wunclub.com/ And their mailing list: http://mailman.qth.net/mailman/listinfo/wun BT Tracy Johnson MSI Schaevitz Sensors * To join/leave the list, search archives, change list settings, * * etc., please visit http://raven.utc.edu/archives/hp3000-l.html *