Date: Mon, 29 Aug 2016 18:52:14 -0500
From: Courtney Judd <k4wi@k4wi.net>
To: "Towertalk@contesting.com" <Towertalk@contesting.com>
Cc: ACG <contest@alabamacontestgroup.org>, SECC <secc@contesting.com>
Subject: [TowerTalk] 6 mtr quad
I have been thinking about building a monster quad for 6 mtrs. I have
googled quads and all about but came up with very little data to work
with. I did find a 7 el regular spaced quad on 19 ft boom but I was
thinking of more elements and wide spaced... I have several 44 ft 2 in
booms or even a 60 ft 3 in boom. I wanted to stick this on my rohn 45 at
100 ft. Anyone have any ideas or can point me to a web site or reflector
where i could find something like this? Thanks, Cort K4WI
## The problem with quads is the spreaders do nothing...except to
support the (failure prone ) wire loops. The windload on the 4 x spreaders is
a heck
of a lot more than a simple yagi element.
## IE: you require 4 x 13 ft spreaders to build a 20m ele. Thats
a total of 52 ft of spreaders..just to make one 20m ele = nuts. And
double all of that for a 40m full size quad ele.
## My short 40M f12 eles are only 44 ft long....and my longer F12 40m eles
as used on the f12 N series of 40m eles, range from 52-59 ft long.
## 6m eles are only aprx 10 ft long. Tha’s dead simple to make from .375 +
.500 tubing. 6 ft center section of .500 tubing...with .375 tips. Use a 6
ft length
of .500 tubing for the center section...and 3 ft sections of .375 tubing for
each tip.
## Thats cheap at dx engineering. Quads are a pita. 4 x spreaders per ele,
and
some form of spider to mech connect all the spreaders..then onto the boom.
## a buddy has the m2 6m yagi...on the 52 ft boom. It’s a flame thrower..and
light weight.
## quads + quagis went the way of the do-do bird. dont even go there.
Jim VE7RF
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