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Cecil Moore · July 11th 06, 02:11 PM posted to rec.radio.amateur.antenna

wrote:
The shield is eight wires arranged in
a regular octogon with the tops and bottoms tied together.

That doesn't seem to me to simulate a coax shield and
is more akin to parallel conductors. Doesn't skin effect
enter into the coax braid equation? It seems to me that
by floating the inside conductor and using the coax
braid as the radiator, we are forcing most of the current
into common mode on the outside of the shield. With zero
current at each end of the floating center conductor, why
would current flow on the inside of the braid?
--
73, Cecil http://www.qsl.net/w5dxp