Gene Fuller wrote:
So how is your study of the NEC documents going?

I don't understand it yet. But EZNEC does understand it since
EZNEC reports the correct results for both traveling wave
current and standing wave current. I just downloaded an updated
graphic to http://www.qsl.net/w5dxp/travstnd.GIF but qsl.net
is so unreliable I haven't been able to view it yet.

I learn something new every time I plow through the mathematical
discussion. I find current discussed on almost every page, but I am
still searching for the part that discusses standing waves and traveling
waves.

Glad you asked, Gene, regarding the cos(kz)*cos(wt) term in a
standing wave:

Gene Fuller, W4SZ wrote:
In a standing wave antenna problem, such as the one you describe,
there is no remaining phase information. Any specific phase
characteristics of the traveling waves died out when the startup
transients died out.

Phase is gone. Kaput. Vanished. Cannot be recovered. Never to be
seen again.

The only "phase" remaining is the cos (kz) term, which is really an
amplitude description, not a phase.

One can see from my above graphic that EZNEC indeed does differentiate
between traveling waves and standing waves. So how does EZNEC do that?
EZNEC agrees with your above posting but I don't yet know how it knows.
--
73, Cecil http://www.qsl.net/w5dxp