On 14/10/2018 20:30, brian wrote:
 In message , Gareth's Downstairs Computer 
    writes
 Whereas such antenna predictors seem to feature in amateur usage,
 does anyone, anywhere, in the world of amateur radio have an
 understanding of the underlying principles involved in
 predicting the performance of antennae, or have we all,
 regrettably, become indistinguishable from
 consumerist CBers or beginner licensees?
 
 4NEC2 and EZNEC areĀ* just a fancy front and back ends for NEC2 (and 
 NEC4) Engines.
 
 Program description is here :-
 
 https://ntrl.ntis.gov/NTRL/dashboard...tail/ADA956129.
 xhtml.
 
Thanks for the heads up, Brian, but a quick glance suggests that some
revision might be necessary of my 3rd year uni textbook, "Fields and
Waves in Communications Electronics" by Ramo, Whinnery and Van Duzer.
ISTR it to be an excellent book explaining complicated things in words
of one syllable, but 46 years down the line, I might have a more
romantic memory of it in reality  :-)