[UK-CONTEST] FWIW :RE: 'Remote' radials...

[Adrian Rees]

For what its worth....
 
I have found that using elevated radials narrows the SWR bandwidth quite dramatically, and you may well find RF hotspots (high voltage) points on the elevated radials. 
 
Admittedly a Quarterwave vertical with 4 elevated verticals will perform with comparable results to a Quarter wave vertical with a high number of buried or laid on the surface of the ground radials.
 
There has been a significant amount of research and experimentation carried out on the subject of raised or elevated radials.An important point that is not mentioned too often, is that the vertical radiator is fed at ground level, and the elevated radials come up from the feed point,at angle of about 45 degrees,  to a height of around 4 foot, and then remain elevated at the 4 foot level til they are terminated in an insulator.   A quick google will bring up lots of info.
 
PS. The sheep may like the rials, and you'll have an early dinner......
 
73
 
Adrian MW1LCR  

________________________________

From: uk-contest-bounces at contesting.com on behalf of alannottage at aol.com
Sent: Tue 16/06/2009 15:27
To: uk-contest at contesting.com
Subject: Re: [UK-CONTEST] 'Remote' radials...



-----Original Message-----
From: Mike Chamberlain <g3wph at folly.demon.co.uk>
To: 'UK Contest Reflector' <uk-contest at contesting.com>
Sent: Tue, 16 Jun 2009 15:23
Subject: Re: [UK-CONTEST] 'Remote' radials


If it's possible, a better solution may be to use 3 or 4 elevated resonant
radials on a temporary basis - these seem to work exceptionally well.


...way to go.

?

Al G0XBV

P.S What's with the ??Anyone else had this?



?

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