Given all things equal, no obstructions, a transmitter driving out 10mW of RF, has a range of around 3000' on 216MHz. If the power is cut down to 1mW, is the range decreased by a factor of 10 or is there a mathmatical relationship to it? This is narrow band FM voice BTW. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist