Jim Kelley wrote:
Reg makes a good point. We know that the same amplitude (less ohmic
losses) of current travels the entire length of the antenna in both
directions. The relative phase of forward and reverse currents simply
makes the superposition of the two currents greater at one end than
another. We might measure the standing wave current with an ammeter,
but it is the traveling wave currents which radiate.

A balanced top hat doesn't radiate much because the currents in the
opposing elements are 180 degrees out of phase with each other. It
doesn't matter if they are traveling waves or standing waves. If they
are 180 degrees out of phase with each other, they are more like a
transmission line than they are like an antenna.
--
73, Cecil http://www.qsl.net/w5dxp



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