Richard Clark wrote:
As modified, the current slope reveals this is no longer a traveling
wave antenna (but it never was anyway). This can be remedied by
shifting the last load (the apparent transmission line load) to 750
Ohms.

Duhhhhhhhh! When you changed the conditions, you changed
the characteristic impedance. The reason for your confusion
is obvious below.

This, of course, improves nothing in performance.

This is not a performance issue. This is a current phase
issue. The purpose for the existence of that EZNEC file
is to illustrate traveling-wave current - nothing else.

After all, who ever heard of a traveling wave transmission line?

Who indeed? Richard, FYI, a transmission line terminated
in its characteristic impedance *IS* a traveling wave
transmission line. Do you understanding the meaning of
a "flat" transmission line? A flat transmission line *is*
a traveling wave transmission line. Here is one modeled
in EZNEC. Download and click on "Load Dat".

http://www.w5dxp.com/stub514R.EZ

Why is the ignorance level about traveling waves so high
on this newsgroup? It's the result of those inadequate
lumped circuit models.
--
73, Cecil http://www.w5dxp.com

On Wed, 19 Dec 2007 22:11:23 GMT, Cecil Moore
wrote:

This is a current phase issue.

The Rhombic antenna shows phase variation for every configuration.

The Rhombic is, by the way, a traveling wave antenna, and your own
topic selection.

The Rhombic antenna does not support your thesis. Absolutely no
correspondence (other than my own for a non-antenna) has been offered
to assault my data.

So, the bottom line is that EZNEC faithfully models both traveling
wave antennas, and resonant lines; and no one here is surprised about
that. Still confused? You don't seem to be particularly motivated
with this issue at all - it must be a humbling experience for you to
have introduced this in terms of a real antenna that refuses to toe
any of your absurd propositions.

Clever crafting only makes your theories ever simpler to blow away.

I wait for your next joke, that one was too easy! :-)

Cecil Moore wrote:

...
Why is the ignorance level about traveling waves so high
on this newsgroup? It's the result of those inadequate
lumped circuit models.

In Einsteins' spirit, let's have a real look at waves (basically the
KISS rule):

http://www.colorado.edu/physics/2000...ing_wave1.html

you must go to the bottom of each page and click to view the next of the
series.

The standing wave is "driven" by the forward & reverse traveling waves,
yet best thought of as being "separate in existence" (there are a total
of 3 waves!) ... and can only/really exist within strict confines of
design--or, resonance ...

But then, this is nothing new, or, you already knew that ... I just like
the way this is all presented--on those pages, or, even newbies are
introduced to the depth of the argument ...

Regards,
JS