[TowerTalk] Coil across feed point of dipole

[Jim Brown]

On 10/16/2019 5:42 AM, Stan Stockton wrote:
> I need to know some approximate dimensions of what that coil should be and also whether there are other concerns I may have not considered.

A stub that is optimally placed on the 40M dipole feed to kill the 
second harmonic will also prevent interaction with 20M. It works by 
shorting the feedpoint of the 40M antenna on 20M.

http://k9yc.com/StubPlacement.pdf

73, Jim K9YC