> Remember that ham radio transmissions can't be encrypted. May not be, formally. But the rules, in at least some administrations, allow the use of "modes" which are essentially encrypted by their nature. How well encrypted is moot. In such cases call sign must be sent in clear text every xxx. Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .