Jim Lux wrote:
Art Unwin wrote:
On May 11, 4:02 pm, Jim Lux wrote:


Again you preach but obviously you are not qualified to address the
issue.

Opinions on qualification differ.

AO pro by Beasley consistently produces an array in equilibrium when
the optimizer is used as well as including the presence of particles
dictated by Gauss., The program is of Minninec foundation which
obviously does not require the patch work aproach that NEC has.

Interestingly, MININEC uses the very same method of moments that NEC
does, but, because it's "mini" it has substantial limitations. It was
developed to fit in small microcomputers of the day. I'd hardly call
NEC "patchwork". The two programs do use different formulations for the
basis function defining the current on the segment.
. . .

That difference in choice of basis functions has profound effects on the
limitations and quirks of the program, however -- they're quite
different for NEC and MININEC. MININEC is, in fact, able to do some
things that NEC can't, despite its simpler formulation.

Roy Lewallen, W7EL