Cecil Moore wrote:
Jim Kelley wrote:
Cecil Moore wrote:

We would make a measurement of either the forward or the reflected
traveling wave, which are phase delayed along the antenna.

I'm sorry, but that is a false statement. Measuring the forward
or reflected traveling wave, which is less than 10% of the
total energy *on the antenna*, is exactly what is the problem.

Hmmmm. Perhaps I misspoke. I should have said that's what I usually
measure when I want to know how much power my antenna is radiating. I
guess I don't actually know for sure what other people usually measure.
But if they have a Bird wattmeter for example, that's what they
usually measure too.

The context, as proved by your first posting above is
measurements "along the antenna". Why do you need to divert
the issue by changing the context in midstream? Why can't
you just discuss things in context?

A Bird wattmeter will not work "along the antenna". Contrary
to what you assert above, *nobody* uses a Bird wattmeter
"along the antenna" to measure anything. A Bird wattmeter
is a 4-terminal device requiring a reference which doesn't
exist "along the antenna".

The only measurements that have been made "along the antenna"
are total current measurements. Seems the only way to measure
forward traveling waves "along the antenna" is to use a
traveling wave antenna like a terminated rhombic.

Yes, bla bla bla, whine, etc.

Here is a photograph of a directional wattmeter converted to measure
current on W8JI's web page.

http://www.w8ji.com/building_a_current_meter.htm

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