On Sep 4, 12:53*pm, Cecil Moore wrote:
Art Unwin wrote:
Since the radiator is
a full WL that represents a period it is of closed circuit form.

My comments were about a one-wavelength straight
wire dipole in free space. The reflections from
the ends are what result in that large resonant
resistance at the center.

* * * * * * * * * --Vf
Open * * * * * * --If
----------------------fp----------------------
Circuit * * * * *Vr--
* * * * * * * * * Ir--

Zfp - feedpoint impedance, Vf - forward voltage,
Vr - reflected voltage, If - forward current,
Ir - reflected current

Zfp = (Vf+Vr)/(If-Ir) = thousands of ohms

However, if we fold the 1WL dipole into a circular
1WL loop it is still a standing-wave antenna but
the phase of the reflections is reversed.

Zfp = (Vf-Vr)/(If+Ir) = ~100 ohms.

Where are those reflections coming from in a
circular 1 WL loop? Why is the phase of the
reflections reversed?
--
73, Cecil, IEEE, OOTC, *http://www.w5dxp.com

Equilibrium means equilibrium thus there are no reflections. Actions
have an equal and opposite reaction. What are you going to draw upon
for an equalizing vector?

Art Unwin wrote:
Equilibrium means equilibrium thus there are no reflections.

No reflections on a standing-wave antenna?
Where do the standing waves come from?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

On Sep 4, 3:00*pm, Cecil Moore wrote:
Art Unwin wrote:
Equilibrium means equilibrium thus there are no reflections.

No reflections on a standing-wave antenna?
Where do the standing waves come from?
--
73, Cecil, IEEE, OOTC, *http://www.w5dxp.com

There are no standing waves either

On Sep 4, 3:40*pm, Art Unwin wrote:
On Sep 4, 3:00*pm, Cecil Moore wrote:

Art Unwin wrote:
Equilibrium means equilibrium thus there are no reflections.

No reflections on a standing-wave antenna?
Where do the standing waves come from?
--
73, Cecil, IEEE, OOTC, *http://www.w5dxp.com

There are no standing waves either

Remember my WL is a closed circuit

Art Unwin wrote:
Remember my WL is a closed circuit

Believe it or not, there are reflections at the
feedpoint caused by the Z0 physical impedance
discontinuity. You would be correct only if your
"closed circuit" was a traveling wave antenna.
But if it was a traveling wave antenna, its
feedpoint impedance would be in the hundreds
of ohms which, I assume, it is not. The fact that
your antenna doesn't have a feedpoint impedance
equal to the Z0 of the antenna wire proves that
reflections are present.

W8JI made essentially the same mistake in his loading
coil delay measurements so don't feel bad about it.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Art Unwin wrote:
There are no standing waves either

If there were no standing waves, a current pickup would
read a constant current when moved up and down the conductor,
but it doesn't. A current pickup proves there are standing
waves. You can see it with your own eyes using RF current
meters available from MFJ. If your theory rests on "no standing
waves" being present, it can easily be disproved.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

On Sep 4, 6:57*pm, Cecil Moore wrote:
Art Unwin wrote:
There are no standing waves either

If there were no standing waves, a current pickup would
read a constant current when moved up and down the conductor,
but it doesn't. A current pickup proves there are standing
waves. You can see it with your own eyes using RF current
meters available from MFJ. If your theory rests on "no standing
waves" being present, it can easily be disproved.
--
73, Cecil, IEEE, OOTC, *http://www.w5dxp.com

I will wait for that day.
Regards

Art Unwin wrote:
I will wait for that day.

No need to wait. It's easy to make the measurements
for yourself. I have already done it to prove that
standing wave current, with its unchanging phase
relative to the feedpoint current, cannot be used
to measure the phase delay through a loading coil.

If a current probe is used to measure a traveling
wave, the amplitude will be constant. If the amplitude
changes from point to point, it contains a standing wave.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com

Cecil Moore wrote:
Art Unwin wrote:
I will wait for that day.

No need to wait. It's easy to make the measurements
for yourself. I have already done it to prove that
standing wave current, with its unchanging phase
relative to the feedpoint current, cannot be used
to measure the phase delay through a loading coil.

If a current probe is used to measure a traveling
wave, the amplitude will be constant. If the amplitude
changes from point to point, it contains a standing wave.

Art? Measure something? You must be kidding.

Next you'll expect him to tell us how to build one of his antennas.
Then we'd all know for sure what a fraud he is.

tom
K0TAR