All: Without looking at the load, I generally aim for 18 AWG for a receiver and 16 AWG for a typical 100-200 watt 120 VAC transmitter. For transmitters less than 100 watts (e.g. my old Knight T-60 that I sold too long ago) 18 AWG was fine. That seems to match what's already installed on the units I fix, by the way. Dave WB4FUR