On Mon, Jun 4, 2012 at 11:30 AM, Willis <wrcooke at yahoo.com> wrote: For 500 watts use kw rated antennas. RG 213 is good but wire and loading > need to be #14. > Not my experience. For over five decades, I have used #18 wire for many antennas. Current antenna has segments of #18 with no ill effects at 1.5kW output. 73, Hank, W6SX