[TenTec] Radial Research

[Bob McGraw - K4TAX]

Most studies concur that "buried radials" should not be deep but preferably 
at the surface.  Also most instillations incorporate a conductive mat at and 
around the base of a vertical radiator where the ground current is highest. 
This supports the discussions of using more and shorter radials will be 
better than fewer but longer radials.  i.e. - 20 radials of 20 ft each will 
be better than 4 radials of 100 ft each.  In both cases, 400 ft of wire 
required.

73
Bob, K4TAX




----- Original Message ----- 
From: "Stuart Rohre" <rohre at arlut.utexas.edu>
To: <tentec at contesting.com>
Sent: Friday, May 18, 2012 6:19 PM
Subject: Re: [TenTec] Radial Research


> Oh Yes, Rudy is quite specific about elevated radials also.
> They are the most efficient.
>
> Just consider that dirt is not a very good conductor of RF, why would
> you shield  your radials by burying them in or near a non conductor?
> Atop the ground would be the least of the lossy methods, while elevated
> radials would have the best performance as his data shows. Rudy shows
> they don't have to be elevated high to get the performance up.
>
> Radials do tune your antenna depending on their type and length, also
> covered in his experiments.
>
> Stuart Rohre
> K5KVH
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