[TowerTalk] Inverted Vees

[Jim Thomson]

Date: Mon, 15 Jun 2020 14:35:40 -0700
From: jimlux <jimlux at earthlink.net>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Inverted Vees

<for an idealized half wave dipole, the 10dB down point is at about 67 
<degrees off broadside.
<For a 1/4 wavelength (half length) dipole, it's at about 70.5 degrees, 
<and for an infinitesimal dipole it's at 71.5 degrees

<For 20 dB it's 82.7, 84, and 84.3.


<That is, if you are 23 degrees off the end, your "depth of null" is 
<10dB. To be 20 dB down, you've got to be about +/- 7 degrees.

<The null is sharper for the smaller antenna, which seems somewhat 
<counter intuitive.

##  What is the null depth  when its  exactly at  90 degs ??  IE:  directly off the ends of the  dipole.  

Jim  VE7RF