[600MRG] 600 meter antennas

[jseitner at comcast.net]

I just downloaded two marvelous papers re 600 meter antennas by Rudy Severns, N6LF. I just printed 39 pages of these antennas. The antennas are mostly top-loaded short verticals using base loading coils. The article shows efficiency versus the vertical antenna height. My inverted L is essentially a top loaded vertical with one ground wire cut to 1/4 wave per side, so no loading coil is required. The length of the vertical wire is 70 feet and the calculated and measured efficiency is 10%, which corresponds to the N6LF paper and my EXNEC 6 model.