[Top] [All Lists]

[TowerTalk] mistake on dipole over ground

To: "Towertalk" <>
Subject: [TowerTalk] mistake on dipole over ground
From: "Jim Lux" <>
Date: Sat, 4 Dec 2004 17:16:09 -0800
List-post: <>
Guy, K2AV, pointed out an egregious mistake I made on a previous post.
I forgot the phase is reversed on a reflection, so the dipole that is 1/4
wavelength from the reflector has the beam straight up (90 degrees phase on
the way down, 180 in the reflection, another 90 on the way back up... 360
total).  Likewise, the horizontal dipole 1/2 wavelength above ground has a
null vertically (180 down, 180 reflection, 180 up, for 180 relative phase,
creating the null).  Same general explanations for everything else though.

mea culpa.
Jim, W6RMK


See:  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>
  • [TowerTalk] mistake on dipole over ground, Jim Lux <=