[TowerTalk] tower mounted vertical

Tim Kass timkass at hotmail.com
Sat Jun 11 20:03:36 EDT 2005


If you slope the radials, that will lower the impedance a bit, for a full 
size 1/4 wave ground plane it will match 50 ohms...either way it shouldnt 
change more than about 20 ohms and should still present a decent match to 50 
ohm coax.  However another point, moving the vertical that high may help 
with receive signals, but a lot of your transmitted signals will go straight 
up or nearly so, fine if you want short DX.

73, Tim
K8WBL

>From: <hcawthra at sbcglobal.net>
>To: <TowerTalk at contesting.com>
>Subject: [TowerTalk] tower mounted vertical
>Date: Sat, 11 Jun 2005 16:56:52 -0700
>
>I'm thinking of installing a Hy-gain 18avq trap vertical on top of a 50' 
>tower. My question is should the base of the vertical where my four radials 
>sloping down at 45 degree
>angle terminate be also connected to tower. Maybe a better way of saying it 
>should the tower be part of the groundplane system?
>                 73  Howard KA6IOB
>_______________________________________________
>
>See: http://www.mscomputer.com  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.
>
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