View Single Post
  #145   Report Post  
Old May 4th 07, 08:06 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Laws, Statisitics, Lies, and the Damned TRUTH

Richard Clark wrote:
The technical truth will triumph in the end.


As promised, here is a procedure using EZNEC that
will prove just how wrong W7EL and W8JI are about
phase shifts through loading coils.

1. Use the helical coil feature of EZNEC to generate
a 75m Texas Bugcatcher coil.

2. Using EZNEC, find the 1/4WL self-resonant frequency.

3. Load the top of the coil with its characteristic
impedance as indicated by the source's amplitude and
phase being equal to the load's amplitude and phase.
Be patient, because this is an iterative process.

4. Observe the phase shift in the current through the
coil using EZNEC's load's feature.

5. Change the frequency to the user frequency and
observe the new phase shift.
--
73, Cecil http://www.w5dxp.com