Topband: Sherwood article on ground screen

[J Craig Clark]

>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
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