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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