Topband: Adding radials, a question
Tom Rauch
W8JI at contesting.com
Thu Sep 2 18:46:44 EDT 2004
> As I understand it for ground mounted verticals, as you put in more
radials,
> 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 ).
Excuse
> my teminoligy here. So the total resistance approaches the more perfect
35
> 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
in
> 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
as
> 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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