[Top] [All Lists]

[TowerTalk] elevated radials vertical

To: <>
Subject: [TowerTalk] elevated radials vertical
From: "Al Williams" <>
Date: Fri, 8 Jun 2007 00:24:46 -0700
List-post: <>
Our club is planning to use an elevated vertical for fd 40 m.  I have been 
tasked to use EZNEC to determine length of the vertical and radials given a 
feedpoint 10' above ground.

EZNEC reports good vswr with a 4" alum pipe vertical element 33.1' and radials 
32.5' of #22 wire.

However the elevation pattern and gain using real ground shows virtually no 
difference with 0,2,4, and 8 radials. The source impedance jumps from highly 
reactive with no radials to 50 ohms mostly resistive using two radials and 
lowers a bit using 4 and 8 radials.

The pattern and gain being nearly identical no matter how many radials are use 
(including none) has me wondering if I have something wrong in my model?

All comments appreciated, please.


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>