The newest edition of Low Band DXing should be available soon and will
include information on vertical arrays that use parasitic elements. These
arrays were designed by K7CA and are currently being used by him and by
N7JW. They have excellent gain and directivity, and are constructed
entirely out of irrigation tubing (yes, no more Rohn 25, etc !!) I plan to
put up arrays for 40, 80, 160M.
riki, K7NJ - 4X4NJ
-----Original Message-----
From: cq-contest-bounces@contesting.com
[mailto:cq-contest-bounces@contesting.com]On Behalf Of David Robbins K1TTT
Sent: Sunday, February 20, 2005 10:51 AM
To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] parasitic 4-square for 40 meters
Most 4-square designs are driven arrays where all 4 verticals are supplied
with power at specific power and phase relationships to create the desired
pattern. Look for info in the 'low band dxing' book from the arrl.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> -----Original Message-----
> From: cq-contest-bounces@contesting.com [mailto:cq-contest-
> bounces@contesting.com] On Behalf Of Ron Feutz
> Sent: Sunday, February 20, 2005 02:58
> To: cq-contest@contesting.com
> Subject: [CQ-Contest] parasitic 4-square for 40 meters
>
> Contesters,
>
> I have everything I need for a parasitic 40 meter 4-square but can't find
> design info.
>
> I want to try this antenna as my marginal cost will be zero. I have 4 33'
> verticals, an Ameritron RSC 8-V switch and plenty of radial wire and coax
> on hand.
>
> Any info on design and tuning will be appreciated. I believe the design
> has 3 "reflectors" that use the inductive reactance of the open feedline
> to
> make them "reflectors," right. How long should the feedlines be? I can
> tune with the MFJ 259B.
>
> Any models out there to tell me what to expect?
>
> Archive and google search turned up nothing.
>
> 73,
>
> Ron KK9K
>
>
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