[TowerTalk] Open wire

[Jim Brown]

On Mon, 28 Sep 2009 14:42:11 -0400, w4lde wrote:

>I am feeding a 80 meter center feed with open wire, about 100ft feed-line.

Open wire line is highly over-rated, especially on a resonant antenna. Do 
yourself a favor and buy 100 ft of RG8 or RG11. Now, you can add a coaxial 
ferrite choke at the feedpoint, which will likely make the antenna quieter 
on receive and minimize RF in your shack (and your neighbors homes). The 
loss in 100 ft of RG8 or RG11 is negligible on 80M, even with 5:1 mismatch, 
which is about as bad as it can get at the band edges. See my tutorial for 
details on the coaxial choke. http://audiosystemsgroup.com/RFI-Ham.pdf

73,

Jim Brown K9YC