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Old March 21st 06, 02:04 PM posted to rec.radio.amateur.antenna
 
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Default Current through coils

Cecil Moore wrote:

If you are technically correct, why are you so technically
silent on the subject?


I'm not silent.

I think I've done a good job of explaining things, and I've made
measurements and posted results.

At least a dozen of my technical questions have gone
unanswered by being ignored. Lot's of readers have
noticed and commented in emails to me.


So what?

1.) I told you weeks ago I'm too busy working right now to get deeply
involved in this.

2.) When measurements are made, you dismiss them as "measuring current
in a system with standing waves".

If you will repeat your measurements with 1/4WL added
to the top of the base-loaded mobile antenna, you will
start to understand the physics involved. The current
taper through a coil depends upon where in the standing
wave environment that the coil is installed.


Then why can I measure a fixed inductor location in a dfixed antenna,
and range from no taper at all in current to just under 1/3 reduction
in current? Does you standing wave model explain this very repeatable
measurement?

http://www.w8ji.com/mobile_antenna_c...ts_at_w8ji.htm

The lumped-circuit analysis fails for the typical
75m amateur radio mobile antenna.


I disagree. Unless we want to say so does the standing wave model.

The antenna can be modelled as a series of lumped inductors with
capacitance to the outside world just as well as any other method.

73 Tom