View Single Post
  #19   Report Post  
Old December 5th 07, 06:06 PM posted to rec.radio.amateur.antenna
Gene Fuller Gene Fuller is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 342
Default Standing Wave Phase

Cecil Moore wrote:
Keith Dysart wrote:
Hardly surprised. After all, the same can be achieved with an
inductor and/or capacitor which has essentially
0 physical (or electrical) length.


Only true for a lumped inductor which doesn't exist
in reality. Any large coil, such as the coil tested
by W8JI, has considerable electrical length at 4 MHz.
This electrical length is what some folks have been
denying for years even though they should certainly
know better by now.

This then begs the question, is the physical (or electrical) phase
shift in the components of much interest?


It is - when someone tries to convince the world that
there is a 3 ns delay through a 2" dia, 10 TPI,
100 turn coil. The electrical length (phase shift)
through a coil is necessary and sufficient to kill
the old wives tales being supported by some so-called
"experts" on this newsgroup.


Cecil,

No one has ever said that there is a 3 ns delay *through* the coil. Ask
Richard Harrison if Faraday screens work, even without any conduction
path at all. Radiation is real.

You keep trying to change the topic, but the only debate is the relative
contributions of "round and round the wire" vs. other coupling. The math
is not easy, and the problem is not readily amenable to solution by
intuition and word games.

73,
Gene
W4SZ