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Re: [TowerTalk] 75 meter antenna

To: <towertalk@contesting.com>, "Jim Lux" <jimlux@earthlink.net>
Subject: Re: [TowerTalk] 75 meter antenna
From: "Al Williams" <alwilliams@olywa.net>
Date: Thu, 7 Apr 2005 12:19:21 -0700
List-post: <mailto:towertalk@contesting.com>
----- Original Message ----- 
From: "Jim Lux" <jimlux@earthlink.net>


>
> A lot of the details are going to depend on what the soil properties are, 
> and I'd venture that most hams don't have a real good handle on exactly 
> what they are for their particular site.
>
> When you ran your EZNEC models did you use the sommerfield ground or the 
> reflection coefficient? (makes a big difference on feed point impedances, 
> and the corresponding gains)
Although I have ran hundreds of wire antennas with EZNEC, I am still a 
novice--usually variations of wire configurations rather than exploring the 
effects of various ground properties.

I used the "real/hi accuracy and 1 medium 0.005,13).  Also used only #16 
copper wire.

We will appreciate advice.

k7puc 

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