Mark Keith wrote:

Cecil Moore wrote in message ...
The round trip current phase shift in an electrical 1/4WL vertical must
total 360 degrees. If the coil doesn't perform part of that phase shift,
what does?

What if it does though? If the coil is still a fairly small portion of
the overall length, I don't see the change as severe. Heck, if current
is supposed to be the same on each end of the coil, it should be the
same going in both directions.. Seems to me it would pretty much
equal out in the overall scheme of things.

May I suggest that you think about the problem for awhile longer? If the
current doesn't undergo a 360 degree phase shift in its round trip, that
will *decrease* the feedpoint current. But we know the feedpoint current
*increases* when a loading coil is installed. This is a clear indication
that the reflected current is still in phase with the forward current.
--
73, Cecil http://www.qsl.net/w5dxp



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