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[Amps] Floating Elevated Radials

To: <amps@contesting.com>
Subject: [Amps] Floating Elevated Radials
From: "Phil Clements" <philc@texascellnet.com>
Date: Fri, 29 Dec 2006 12:21:49 -0600
List-post: <mailto:amps@contesting.com>
>In transmitting systems elevated radials should never have a ground path.
>Grounding elevated radials reduces efficiency.

>If the house has a lot of noise and you receive on the transmitting antenna
>you might not want to directly ground the antenna ground system to the
>house. This is especially true with a small radial system.

>73 Tom 

My elevated radials float, and are connected directly to the shield of the
feed line. (7/8 inch Heliax.)

When the other end of the Heliax is connected to the output of my amp, it is
"grounded" to the "house" central grounding point because the chassis of the
amp is strapped to it. Are you saying that the amp and transceiver should be
isolated from "house" ground also? If so, just how much efficiency is
gained?

It has always been common practice to DC ground the radials of a ground
plane antenna via the tower and its ground rod system, and by strapping the
shield of the coax to the tower ground system at the base of the tower. Are
you saying this method has less efficiency? If so how much less?

(((73)))
Phil Clements, K5PC





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