Tom Osborne wrote:
>I'm using a phased array on 40 with 3 verticals.
G3HCT's array also uses three verticals, phased in twos and switched to
give six directions. He found that in order to get really good reverse
nulls in all six directions, the radial fields under all three verticals
needed to be as near to identical as possible.
On the other hand, nearby trees, an 80m vertical and an HF-6 about 50ft
away made no difference.
Details are in RadCom for April and May.
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.demon.co.uk/g3sek
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|