On Mon, 03 Nov 2003 15:19:44 -0600, Cecil Moore
wrote:

Roy Lewallen wrote:

Because you're seeing different currents at the two stub terminals, you
must be modeling it with wires, which should reflect reality quite well.
Look carefully at the currents along the stub and you'll find they're
not equal and opposite on the two conductors. Such a radiating stub *is*
very different from a coil.

Instead of a knee-jerk defense of your ideas, why don't you actually take
a look at the problem?
Ah the quality of sneer review.

Those stubs are vertical. EZNEC shows virtually zero
vertically polarized radiation. According to EZNEC, those stubs are radiating
a negligible amount, just like the lumped inductance. Why the 40% difference
in current between the two configurations? Is this a characteristic of NEC?

Cecil, you have two stubs and they are driven antiphase (typical of a
doublet) and through symmetry would have equal antiphase currents when
compared to their opposites, but not necessarily equal currents within
their twin-pair of lines. The sum of ALL currents (and not just the
myopic view of one of two stubs) would suggest exactly what Roy has
offered.

This, of course, returns us to the question of what part of the
radiator radiates. Sadly, the convention of the current pulse (or
maxima, or other equivalent term) trips up discussion just in these
matters. ALL elements radiate, it is only in the far field where
their contributions negate, not literally within the structure.

73's
Richard Clark, KB7QHC