Re: NEC-LIST:old question on non-physical output

Dear Wayne

Why don't you switch over to a program like SuperNEC. With SuperNEC, you can
check your structure for any problems, and the problem segments are
highlighted in the 3D input viewer, by using the structure checker, so you
can see exactly where any problem(s) lies and fix it/them up easily with the
input viewer. You can also change the default checker limits if you so
require.
This checker is very useful in particular to large segment problems.

The structure checker in SuperNEC, displays:
-segment errors eg. length to wavelength, length to radius, crossing
segments,overlapping segments,match point , duplicate ments etc etc etc
errors
-Junction errors
-Junction warnings
-Segment warnings

Regards
Brandon

> I am generating some medium to large antenna files (800 segments)
>
> These antenna are generated automatically from a set of parameters. I
> do my best to make sure that I do not violate any wire rules, but even
> when I think there are no violations, I get strange results.
>
> For instance I may get negative port Z, or negative efficiency, or
> greater than 100% efficiency.
>
> sometimes I will have a reasonable feed Z and good efficiency, but the
> radiation pattern data is all -999.99 dB, Or the efficiency is ********
>
>
> Perhaps NEC4 is more forgiving of small segments, or maybe I just need
> to look into wire rule violations more.
>
> How should I interpret these strange simulation results?
>
> Wayne S
> --
> The NEC-List mailing list <nec-list_at_gweep.ca>
> http://www.gweep.ca/mailman/listinfo.cgi/nec-list

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