[UK-CONTEST] 'Remote' radials...

Clive GM3POI gm3poi2 at btinternet.com
Tue Jun 16 09:29:30 PDT 2009


Stewart, Because your existing radials represent a small angle to your new 
vertical position they will effectively be of no use. It would only take at 
most a couple of hours to lay a 60+ radial  system  which will provide a 
good ground system. You could also tie in your existing radials to it but I 
doubt whether it will add anything.
73 Clive GM3POI
----- Original Message ----- 
From: "Stewart Rolfe" <gw0etf at btinternet.com>
To: "UK Contest Reflector" <uk-contest at contesting.com>
Sent: Tuesday, June 16, 2009 1:09 PM
Subject: [UK-CONTEST] 'Remote' radials...


>
> Hi all,
>
> Continuing in the 'remote' vein I have a scenario for comment/advice:-
>
> Shack in the garden centred on a decent system of radials trailing round 
> the garden and into a neighbouring farm field (sheep, not ploughed!)
>
> Garden is wife's pride and joy so maybe I want to put up a temporary 
> (single band) vertical out in the field for a weekend's contesting. So how 
> effective can I expect the radial system to be when it's connected to the 
> antenna earth by a possibly longish earth strap? If the strap was 
> electrically isolated and 0.25 wavelenths the antenna earth should be very 
> high impedance and a lousy zero potential; by the same token a half 
> wavelength should be fine...?
>
> Also what's going to happen to the radiation pattern in broad terms?
>
> Thanks for any comments,
>
> Stewart Rolfe, GW0ETF
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