Pete Smith wrote:
> I'm not sure how much of the context was on the reflector, so let me just
> add a little. The same model, with NEC-2 and Sommerfeld-Norton ground,
> shows a VERY different result. Instead of peak gain being at the zenith,
> it is at 41 degrees and maximum is only 5.99 dBi. With what EZNEC calls
> MiniNEC ground, results from NEC-2 are close to those Guy reports from
> AO. Since doubling the number of segments produces very little change in
> these results, I presume they represent good convergence.
> The question is, which modeling result is closer to reality?
I would not trust the MiniNEC ground model with horizontal wires close to
ground. "Close" means under a height of .2 wavelengths. The
Sommerfeld-Norton ground model is reported to be reliable, however, for
horizontal wires down to a height of about .001 wavelengths. I believe
this is all covered in the EZNEC user documentation.
73, John W1FV