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Re: [TowerTalk] EZNEC Question

To: TowerTalk@contesting.com
Subject: Re: [TowerTalk] EZNEC Question
From: "Jim Lux" <jim@luxfamily.com>
Date: Tue, 28 Jan 2025 06:53:05 -0500
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Can you post an example? 
(I can run an example on nec4 and see what it looks like.  Yes, I’d expect 
dielectric to have the most effect where the E-field is biggest)


On Mon, 27 Jan 2025 20:33:55 -0700, David Gilbert <ab7echo@gmail.com> wrote:

I've been using EZNEC Pro/2 to try to model the effects of dielectric
loading on a wire antenna ... specifically a full wave loop on 435 MHz. 
I split the sides of the loop up into multiple wires (each with multiple
segments) so I could individually declare a thick dielectric ... i.e.,
insulation in the wires table ...  separately for each portion of the
loop.  To my surprise the loading effect seems to be greatest at or near
current maximums, not at voltage maximums where I would have presumed
the electric field would have the most effect.  This has me greatly puzzled.

Any thoughts?

Dave   AB7E
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