In article , Roy
Lewallen wrote:


The assumption of sinusoidal current distribution is strictly true only
with straight, isolated conductors which are infinitely thin, although
it's a reasonably good assumption in many other cases. Mathematical
analyses of antennas done before computers were pretty much limited to
cases where sinusoidal distribution was assumed, because a more accurate
determination of current distribution was virtually impossible to
calculate. The ability to determine the actual current distribution is
one of the very important advantages of computer analysis.

Roy Lewallen, W7EL

Hello, Roy, and while the above is certainly correct, you're probably
wasting your time. Many folks like to fashion their own "reasonable"
explanations even when they're completely off track (should I mention the
CFA again?). Of course they're always right and it's the rest of the
world who's wrong. Certain folks on this ng appear to be in constant need
of validation. Persons without some knowledge of the underlying physics
and applied math are destined to reach the wrong conclusions IMO. Of
course that's not going to stop some from building a CFA because as we all
know it's the standard comms antenna used at the Groom Lake facility to
keep in touch with Klaatu. Sincerely, and 73s from N4GGO,

John Wood (Code 5550) e-mail:
Naval Research Laboratory
4555 Overlook Avenue, SW
Washington, DC 20375-5337