Topband: Sherwood article on ground screen

[Jim Brown]

Thanks for providing that link 8 years ago. Around that time I was 
working on a talk about antennas and radial/counterpoise systems for 
160M that I subsequently gave at Pacificon, Visalia, and to several 
local clubs. Almost othing in the talk is my original work, but rather 
collected great work by others.

http://k9yc.com/160MPacificon.pdf

73, Jim K9YC

On 5/6/2020 1:05 PM, J Craig Clark wrote:
>> May 1977 Ham Radio Magazine
> 
>> http://www.sherweng.com/documents/GroundScreen-sm.pdf
> 
> 
> Thanks for the link, Craig. While I agree with the author's premise
> that the ground screen provides capacitive coupling to the earth, I
> do NOT agree that the capacitive connection is what makes the
> antenna work better. Rather, the screen is simply a practical
> equivalent/alternative to ground-mounted radials and providing a lot
> of conductive metal close to the feedpoint. Indeed, the author has
> accidentally discovered what N6LF and others have long been saying
> -- radials on the ground do not need to be resonant, they simply
> need to provide a lower resistance path than the earth, and that
> copper near the antenna is far more important than at a greater
> distance from the tower.
> 
> 73,
> 
> Jim Brown K9YC
> 
> Craig Clark
> K1QX
> 603-520-6577 cell
> 603-899-6103 home
> Sent from my iPad
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