Hi Carl,
I won't repeat your tirade.
The surge impedance of a conductor is greatly affected by distributed
inductance and capacitance. Impedance is governed by the surge
impedance of the structure, not by the fact we "call it" a Beverage.
Winding wire in a mutually coupled string of "coils" increases L much
more than C. We use that effect for phase delay lines, as well as to
wind inductors.
You seem to disagree, but directivity of a traveling wave antenna is
GREATLY affected by PHYSICAL length. It is possible to get good
directivity in short antennas, but phase delay and current
distribution along the wire needs to be correct. (Any antenna,
however, is always better than no antenna at all.)
If you send me a Slinky Beverage, and the typical dimensions you
suggest, I'd be happy to measure the surge impedance and
propagation delay along the wire.
If have personal comments, please reply by e-mail or in person.
73, Tom W8JI
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