[TowerTalk] Fwd: Radial question

[Hans Hammarquist]

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 at hotmail.com>
To: towertalk <towertalk at 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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