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Old April 28th 07, 12:40 AM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Rotational speed

Roy Lewallen wrote:
All voltages, currents, E and H fields reported by EZNEC have the same
(phasor) "rotational speed", which is 2 * pi * f radians/second where f
is the frequency chosen by the user.


This is false!!! Set a zero load anywhere along a 1/2WL dipole
and check the phase. It will everywhere be within 3 degrees of
zero.

Nothing which EZNEC reports alters
this. The fact that the phase angle of the current is nearly constant
over the length of a dipole indicates that the phase angles of the
elements of current along the wire are nearly the same. This means only
that at any instant, the phasors representing currents along the line
are all pointing in nearly the same direction. All are rotating at
exactly the speed given above.


This contradicts what you said before. You said the *total current*
phasor is rotating. Both Kraus and EZNEC disagree with you. Here's
what you said:

Roy wrote:
"This is the total current. It has magnitude and phase
like any other phasor, and the same rotational speed
as its components."

This is a false statement! And since it is false, it renders
your loading coil phase measurements invalid. The total current
does NOT have the same rotational speed as its components.
The phase of the total current does NOT change through a
loading coil or through a 1/2WL wire.
--
73, Cecil http://www.w5dxp.com