Roy Lewallen wrote:
I measured current, which as everyone with a Novice or higher grade
license should know is the rate of flow of charge(*). The charge flows
in one direction during each half cycle, and in the other during the
other half cycle, resulting in current which is positive for half the
cycle and negative for the other. This is known as "alternating
current". In fact, my measurement system (ferrite core transformers)
will only detect alternating current.

Looking at only one current sample point, one cannot tell
the difference between standing waves and traveling waves.
However, there is a large difference between standing waves
and traveling waves.

If you measure the same current phase at two sample points
that are physically 30 degrees apart, you are dealing with
standing waves.

The equation for a standing wave is of the form:

I = Imax*cos(bz)*cos(wt)

This current is the primary effect on a standing wave
antenna and cannot be used to measure the delay between
points in an antenna because this current does not change
phase relative to length 'z'.

If you measure a 30 degree phase shift in the current
between two sample points that are 30 degrees apart,
you are dealing with traveling waves.

The equation for a traveling wave is of the form:

I = Imax*cos(wt-bz)

This current is a secondary effect on a standing wave
antenna. This is the current that changes phase with
physical length 'z' but is swamped out by the standing
wave.

Roy, you listed three possibilities for people who
read your postings.

1. Those who agree with you and are therefore right.

2. Those who disagree with you and later change their
minds to being right.

3. Those who forever disagree with you and are therefore
forever wrong.

Please consider the 4th possibility.

4. Roy Lewallen is not omniscient and could possibly
be wrong.

Again, would someone please forward this to Roy since
he has plonked me?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com