View Single Post
  #24   Report Post  
Old April 29th 06, 09:04 PM posted to rec.radio.amateur.antenna
Cecil Moore
 
Posts: n/a
Default Missing Degrees in Mobile Antennas?

wrote:
I'm saying that in an antenna of fixed length with a fixed coil
location on a given frequency, I can change ONLY the coil design, still
maintain resonance, and have phase delay of current change
significantly.


So can I - so what? It's the same thing as changing the Z0
of one of the pieces of feedline in my two-Z0 stub example.
No coil is required, indicating once again that your misconception
involves standing waves, not coils.

IMO, you are never going to understand this topic until you
take time out to understand standing waves.

What is it you think
determines current phase shift at each end and current taper?


I explained that at the start of the argument two years ago
and it has been posted on my web page ever since then.

http://www.qsl.net/w5dxp/current.htm

Scroll down to:
"Why the Net Current is not Constant Through a Loading Coil"

My example works in every case.


No it doesn't. Your own current measurements prove that the
current is *NOT* equal at both ends of a coil (and your
phase measurements were invalid). Only one special case toroid
showed the currents at the ends of the coil to be equal. All
the other cases proved that the currents are *NOT* equal.

As Gene Fuller said, the standing wave current phase information
is contained in the magnitude. With a current of 2.0 amps at one
end of the coil and a current of 1.414 amps at the other end of
the coil, it exactly matches the example on my web page. One of
your measurements was very close to 1 amp at one end and 0.7 amps
at the other end. It fits perfectly.
--
73, Cecil http://www.qsl.net/w5dxp