RadioBanter - View Single Post

March 20th 06, 12:46 AM posted to rec.radio.amateur.antenna

wrote:
I think what everyone has forgotten is a large amount of current taper
in a loading coil of a short monopole, while possible, is a good
indicator of a very poor antenna design.

While zero current taper in a loading coil is a good indicator
of a confused engineer, unless of course, there's a current
maximum inside the coil or a very large top hat. The current
taper depends upon where the coil is installed in the standing
wave antenna system. Some positions can result in current flowing
into both ends of the coil at the same time, just like a transmission
line. But the delay through an HF loading coil is *NEVER* 3 nS.

Say Tom, you were going to explain to us how the lumped-circuit
inductor theory handles a coil with 0.17 amps at zero degrees
at the bottom of the coil and 2.0 amps at 180 degrees at the
top. We are still waiting.
--
73, Cecil http://www.qsl.net/w5dxp