[Elecraft] Verticals

[Jim Brown]

On Fri,9/12/2014 3:45 PM, Joe Subich, W4TV wrote:
> The common mode choke
> does not have sufficient choking impedance where the feedline is an
> odd multiple of 1/4 wavelength and the stress on the core can be very
> significant with high power on those bands.

That part of the problem can be solved by adding a good common mode 
choke on the coax near the antenna. See the Cookbook in 
k9yc.com/RFI-Ham.pdf for guidelines.

73, Jim K9YC