Reg Edwards wrote:
. . .

How does EZNEC make its calculations? If you don't know you are
placing your faith in a mirage.

A bit more than a mirage -- you're placing your faith in a program
(NEC-2) which has been in daily use by hundreds to thousands for nearly
30 years, and has been used for designing countless antennas, several of
which you almost certainly use daily.

But anyone interested in knowing how EZNEC does its calculations can get
a highly detailed answer from the NEC-2 manual, available free at
http://www.si-list.org/NEC_Archives/nec2prt1.pdf. Or, if interested in
the general method (method of moments), there's a very good and easy to
understand explanation in the second and later editions of Kraus'
_Antennas_. I'm sure there are some good (and undoubtedly also bad)
explanations of the moment method on the web, also.

Roy Lewallen, W7EL