I'll accept your prediction. It doesn't seem to correlate with your
disagreement with Ian that the current into and out of a lumped inductor
are equal. You accused him of "mental masterbation" and being "seduced
by the steady state model" for even thinking such thoughts.

I also asked you a while back if we should expect a very small inductor
to act the same when connected at the base of an antenna as when
connected to a simple series RC or RL. Your response was that the
analysis couldn't be done using conventional circuit theory, but
required "distributed network analysis". Conventional circuit theory
predicts equal currents going in and out, so from your response I had
presumed that the fancier analysis would predict something else.

You've also stated that the current shift through the inductor should
equal the "electrical length" of the antenna "replaced" by the inductor.
In this case, the inductor is "electrically lengthening" the antenna by
either about 45 degrees, or about half that amount, depending on how you
assign the effect of the mounting arrangement.

So in the past, you've predicted no difference, something like 20 or 45
degrees phase shift, or an indeterminate amount. It's good to see you've
settled on one figure.

My inductor was placed at the antenna base because I could measure the
currents there with reasonable accuracy. The inductor size was chosen to
resonate the antenna, hopefully duplicating the situation reported by
Yuri in his quote of W9UCW's measurements.

On his web site, Yuri quoted W9UCW as measuring the currents at the ends
of a toroid mounted at the base of the antenna as being 100 mA at the
bottom and 79 at the top. You must, then, believe these measurements to
be in error.

Roy Lewallen, W7EL

Cecil Moore wrote:
Roy Lewallen wrote:

Our educations differ a great deal. Mine enabled me to give a
numerical prediction, which as anyone who has read my earlier
postings, is 1. Yours has evidently not prepared you to meet this
onerous challenge.


Roy, I have repeated a statement three or four times earlier on this
newsgroup.
My statement predicts a result of 1. Here is that statement again:

"If a loading coil is placed at a current maximum point, the current in and
out of the coil will be equal." I have been assuming that is why your coil
was placed at the current maximum point, to ensure that the currents would
be equal. Depending upon where the coil is placed, the currents in and out
of the coil can be equal, greater than, or less than.