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Re: [TowerTalk] Floating Elevated Radials

Subject: Re: [TowerTalk] Floating Elevated Radials
From: kd4e <>
Date: Fri, 29 Dec 2006 14:32:09 -0500
List-post: <>
Are there any positive or negative variables
re. lightning incumbent to the floating radials
design vs those traditionally tied to the coax shield?

Here in central FL that is a *always* a required

>>> 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


Thanks! & 73, doc, KD4E
*Have a joy-filled New Year!*

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