The height of the radials above ground is a factor in effeciency.
N6BT has reported that for good efficiency, they need to be
>0.05 WL above ground (14 ft on 80M). Two radials will work,
but "more is better".
I have an 80M elevated (reverse fed) top-loaded GP with 10
radials that are 15 ft above ground. The antenna "feels" quite
competitive and will sometimes even beat out my high dipoles
at 130 ft. I have worked 230 countries on 80M with this antenna
(322 lifetime total). See my article in JUNE 1994 QST.
de Tom N4KG
On Wed, 10 Jan 2001 "Joe Sloss" <sloss@mindspring.com> writes:
> Would appreciate end-user performance comments on a single Force
> EF180BV using 2 elevated radials over average soil.
> What's your experience? Thanks, Joe K7MKS
>
________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today! For your FREE software, visit:
http://dl.www.juno.com/get/tagj.
--
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|