Yuri Blanarovich wrote:
I claimed that current in the antenna coil is NOT CONSTANT (or near) as he
claimed.

Only one out of a dozen tests run by W8JI and W7EL showed the
currents to be equal. All the other tests showed the currents to be
*unequal*.

The significance of properly realizing the current distribution in the
loading coil is in how the modeling programs treat the phenomena and major
screw-up will show up in multi element loaded antenna systems, where error
will multiply and give false results.

The helix option in EZNEC supports the notion that the currents
are hardly ever equal. If a coil is installed at a standing wave current
maximum or minimum the currents can be equal. If the coil is installed
at a point where the slope of the current is maximum, the difference
in the currents at each end will be maximum. That's pretty simple physics.
The currents at each end of a coil in a standing wave environment depends
upon where it is installed.

I provided an example where the current "into" the bottom of the coil
was 0.17 amps and the current "out of" the top of the coil was 2.0 amps.
W8JI said the lumped-circuit inductance could explain that so I asked
him to explain it to all of us. So far, no response.

Wonder how a model that assumes faster than light propagation of waves
and absolutely equal current magnitude and phase is going to explain a
1.8 amp difference and a phase shift of 180 degrees?
--
73, Cecil http://www.qsl.net/w5dxp