" P.S. I saw a Mexican FM that was 50KW/102 feet HAAT.. ouch, RF!! Paul Walker " That may not be as bad as you think. I know of an FM station that has an antenna where the C.O.R. (center of radiation) is 100 ft. HAAT (height above average terrain) and the C.O.R. is around 300 ft. AGL (above ground level). No RF issues at ground level there. Gary, K?CX