On Fri, 18 Jun 2010 09:12:21 -0700, Van K7VS wrote: >"The Sommer antennas are designed to be fed by a 50 >ohm unblanced coaxial cable via a 1:1 balun. I suggest a coaxial choke per my Cookbook. http://audiosystemsgroup.com/RFI-Ham.pdf 73, Jim Brown K9YC