[TowerTalk] Vertical vs Yagi

[Paul Christensen]

David,

It was actually part of the side-bar discussion presently running under "EZNEC Needs Improvement."

Paul, W9AC
  ----- Original Message ----- 
  From: David Gilbert 
  To: Paul Christensen 
  Cc: TowerTalk 
  Sent: Monday, April 06, 2009 12:58 PM
  Subject: Re: [TowerTalk] Vertical vs Yagi



  Sorry ... I missed that.  I even searched through the archives to check, but apparently I overlooked Bill's post.

  73,
  Dave   AB7E



  Paul Christensen wrote: 
and I'm really surprised that nobody so far has referenced the 
gyro-frequency effect espoused by propagation expert NM7M and others. 
    
David,

Bill, W4ZV referenced this effect early in the discussion:

"This problem has to do with something called magnetic coupling
(or polarization) loss.  This primarily affects 160m which is closest to
the gyro-electron frequency which varies from about 0.7-1.7 MHz worldwide
depending on the intensity of the magnetic field)."

Paul, W9AC

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