Gene Fuller wrote:

Cecil,

I am fully aware of the "original argument". To confess my bias, I agree
with Tom D. and Tom R. There is no "current drop" ever, and there is no
current change in an ideal inductor. W8JI explains in some detail why
real coils show different currents at each end.

So do I, Gene. Have you looked at my web page? A standing-wave antenna
contains standing waves. The forward and reflected currents superpose.
If there is any phase shift at all through a 75m bugcatcher coil, the
current at the bottom and at the top will NOT be equal even if the
forward current through the coil is constant and the reflected current
through the coil is constant. If you disagree with me and agree with
Tom, you are saying there is zero phase shift through a one foot by
one foot bugcatcher coil. Do you really want to assert that?

How can there possibly be a current drop across a dimensionless point?
The fact is, a dimensionless point inductance does NOT and can NOT exist
in reality. So are more interested in playing games in your mind than
you are in the real world? The argument is about real world 75m bugcatcher
coils, not ideal inductances that exist only in someone's wet dream.

Your example is a circuit, not a distributed network, and is therefore
irrelevant to this discussion. Distributed networks behave different
enough from lumped circuits that the lumped circuit shortcuts just
don't work on distributed networks. Why you and Tom want to force your
lumped constant concepts unquestioned upon the field of distributed
network problems is beyond me.

Your RG-58 transmission line example is no different. The current from
the source is not lost or "dropped". It simply finds other paths in
addition to the "load" to return back to the source. Antennas and
loading coils exhibit the same phenomenon.

Some of the power radiated from an antenna does NOT return to the source.
It may even escape to outer space. Power lost from the system causes
a current drop. In fact, it is hard to separate the H-field from the
E-field for RF. I am amazed how you guys have been seduced by your math
models. Reality is supposed to dictate math models, not vise versa.
--
73, Cecil http://www.qsl.net/w5dxp


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