Does anybody know how the influence would be if I put in wires that run
diametrical instead of radial? What if I put down both radial and diametrical
and connected them together. That would result in a more traditional shield
around the antenna. Just wonder.
Hans - N2JFS
-----Original Message-----
From: Donald Chester <k4kyv@hotmail.com>
To: towertalk <towertalk@contesting.com>
Sent: Sun, Feb 28, 2016 7:25 pm
Subject: Re: [TowerTalk] Radial question
> For ground-laid radials, didn't Jim make the point that they serve primarily
> to shield the Earth from the antenna's RF?
> 73, kelly, ve4xt
That's true - to shield the radiating antenna from the LOSSY earth. Some
self-proclaimed experts have argued with me on that point, saying I was wrong
and that the function of the radials is not to act as a shield, but to return
earth currents back to the base of the vertical with minimal resistive loss.
Equally true. It's only a matter of semantics.
The earth makes a poor conductor for gathering the displacement currents from
the antenna and returning them to the base of the radiator. The radial wires
each act like a shunt wire to short out the ground resistance return the
current with less loss, effectively by-passing the lossy earth. By
definition, a shield. No matter which way you look at it, we are talking about
the exact same phenomenon.
Don k4kyv
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