>In order to have a long distance transmission, you go as low in frequency as you >can (given antenna limitations), and you get as highly sensitive of a receiver >as you can. The lower you go the more lightning and other interference you will receieve and the really sensitive receiver may not do you much good. Skip is interesting but the signal may skip right over you. Another consideration is to speak slowly. Lowering the data rate gives you the same gain as raising the transmitter power would. (Assuming the receiver knows how to 'gather' the results). This is in effect what the Morse code guys are suggesting. Barry -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:","[SX]:","[AVR]:" =uP ONLY! "[EE]:","[OT]:" =Other "[BUY]:","[AD]:" =Ads