If you use a 950 MHz STL then take a look at the latest Location Sound, Inc (LSC) Newsletter for Summer/Fall 2008. See: http://www.locationsound.com/pdf/Newsletter.pdf Pay particular attention to the column, "Important RF Spectrum News" Burt Burt I. Weiner Associates Broadcast Technical Services Glendale, California U.S.A. biwa at att.net K6OQK