[Elecraft] Inverted-L (was OT: Vertical antenna)

Guy Olinger K2AV olinger at bellsouth.net
Tue Dec 21 10:28:34 EST 2010


The only thing I would point out about the article is that it
basically is a tabulation of model results, an extension of the model
presentation, what do you get if you run the model over and over kind
of thing.  The modeling of dirt is in itself an attempt to extend a
limited paradigm of MF measurements (aka commercial broadcast band),
focused on measurements at the ground for very practical reasons
(Norton-Sommerfield) and has its own set of  well-known issues.  It is
quite common to model radial kinds of issues and then install a design
and find quite different results.  Dirt, and all its variability,
remains notoriously resistant to being modeled.  Modeling can, I say
"can", get one in the neighborhood and it's back to cut and measure,
and a degree of common sense.

73, Guy.

On Mon, Dec 20, 2010 at 10:14 PM, Tony Estep <esteptony at gmail.com> wrote:
> For those who wish to pursue the radials question further, here's one of the
> many publications on the subject. This one is replete with numerous tables
> and graphical representations of the incremental value of more and longer
> radials in various types of soil:
>
> http://www.ncjweb.com/k3lcmaxgainradials.pdf
>
>
>
> Tony KT0NY
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