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Re: Topband: Low Loops, Tee's and ...

To: topband@contesting.com
Subject: Re: Topband: Low Loops, Tee's and ...
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 30 Jun 2015 13:36:22 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
On Tue,6/30/2015 10:40 AM, dick.bingham wrote:
The ground system is a single 8-foot Rod driven into the sandy/rocky soil and the antenna 
fed through an appropriately "tapped" inductor in a parallel-LC network 
connected between ground and one of the antenna's end-wires.

That's not a ground system, it's a dummy load. A ground system requires either radials or a counterpoise of the sort that K2AV has developed. A radial system has two functions -- to SHIELD the antenna's fields from the lossy earth, and to carry return current. All the ground rod does is connect to lossy earth, which, as far as the antenna is concerned, is a big resistor.

73, Jim K9YC


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