[Antennaware] EZNEC how to choose number of segments

[Guy Olinger K2AV]

Hi Dave,

What are you using for the vertical's counterpoise? What are you using for
the the ground type? Where is your source placed?

These are essential to answer your question.

73, Guy

On Fri, Jul 12, 2019 at 8:02 AM David Gould <dave at g3ueg.co.uk> wrote:

> Most of my modelling has been with wire antennas but now I am modelling
> some verticals with elements having diameters of between 38mm and 25mm
> for 20m and 40m (and using drooping elevated radials made of wire)
>
> I usually use around 9 or 11 segments for a 1/4 wave element.  I noticed
> that when I changed the number of segments the results for things like
> feed impedance changed quite dramatically.
>
> Are there some guidelines for the number of segments for a 1/4 wave
> straight wire element?
>
> How is the choice of segment length affected by the diameter of the
> element tubing?  Is there a limit on the ratio of segment length to
> segment diameter?
>
> 73,
>
> Dave G3UEG
>
> _______________________________________________
> Antennaware mailing list
> Antennaware at contesting.com
> http://lists.contesting.com/mailman/listinfo/antennaware
>