Jim What is electrically smal and compared to what ?.
If one can make a small loop containing a small variable inductance as one
would make a variable capacitive form
which is what, 1/10 of a wave length and is inserted in Cecils drawing which
is more than a wavelength long I would consider that relatively small. Since
the circuit generated is purely from the constituents of the original
inductance then the relatively small loop can be inserted.
Knowing that the radiating surface is the inductance before it was reduced
what is to stop inserting the small loop in a black box that has dimensions
such that ports can be directly compared.? Cecil has stated that he is is
confident that he is correctin his assertions ( and he may well be) he is
not interested in counter proposals.
Sort of reminds me that Bush also comes from Texas !
We therefore must accept what Cecil says as unreservidly correct.and there
is nothing more to be said regarding the technical underpinnings. Either
that or attack the man himself which cannot provide resolution.
Regards
Art



"Jim Kelley" wrote in message
...


Cecil Moore wrote:

Art Unwin KB9MZ wrote:
Did you find something wrong with my suggestion above?

Nope, nothing "wrong". I just avoid making assertions when I'm
not 95% certain that I am correct. Thus, most of the time, I am
unresponsive. I am 95% certain that the average humongous mobile
loading coil is not "physically small" and is more like a
certain percentage of a helical antenna which indeed does
obviously demonstrate a net current gradient.

It's certainly true that such a coil is not 'electrically' small.

73, Jim AC6XG