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Re: Topband: Adding radials, a question

To: "Richard Detweiler" <>, <>
Subject: Re: Topband: Adding radials, a question
From: "Tom Rauch" <>
Reply-to: Tom Rauch <>
Date: Thu, 2 Sep 2004 18:46:44 -0400
List-post: <>
> As I understand it for ground mounted verticals, as you put in more
> the 'Q' gets higher.   Especially for for low bands (160 & 80) Thus as the
> radials increase, the radiation resistance increases ( the good kind ) and
> and the ground loss or ground resistance decreases ( the bad kind ).
> my teminoligy here.  So the total resistance approaches the more perfect
> ohm vertical impedence.  Obviously, it can never be fully acheived but the
> point is this,  when the Q stops rising appreciably,  you've probably put
> enough radials for the amount of wire you have in the air.
> Of important note here is that the length of the radial isn't really
> important as the ground detunes them,  but the need to be somewhere about
> long as the height fo the vertical.

Hi Rich,

Actually nearly all of that is not true as a rule. I'd never rely on a
manufacturers web page for critical antenna information.

73 Tom

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