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@sbcglobal.net>
>To: <TowerTalk@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.
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk@contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
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.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|