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Re: Topband: Broadband Inverted L

To: <topband@contesting.com>
Subject: Re: Topband: Broadband Inverted L
From: "Tom W8JI" <w8ji@w8ji.com>
Reply-to: Tom W8JI <w8ji@w8ji.com>
Date: Thu, 20 Nov 2014 14:17:55 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Ground systems cannot be evaluated or estimated by number of feet of wire, just like they cannot be evaluated by SWR or bandwidth, but I'm sure we all agree on this......

The single most important thing Joe said was:

<<<< The antenna feed point terminates at a four foot ground rod and then I am running a number 14 wire from that ground rod to my existing radial field. That run is about 40 feet. >>>>

Joes has virtually no ground at all on 160 meters, because his system's ground connection to the radials is via a single #14 wire 40 feet long.

A 40 ft long wire laid on earth to the radials, even if Joe had 50 x 100 ft radials, would almost certainly make the ground path impedance hundreds of ohms.

Joe's antenna virtually doesn't have a ground connection to radials at all, and this has almost nothing to do with the number of radials or type of radials. It has to do with the 40ft long connection.

73 Tom


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