[TowerTalk] Questions about Irrigation Pipe for Verticals

[Bob Maser]

You will need ±63 feet of 3" irrigation pipe.  I found a thin wall conduit 
that fit inside, barely.  I had to slit the conduit lengthwise and compress 
it with a couple of SS hose clamps.  It then slid in.  I used 1.5 foot 
sections of conduit to make each splice.  I also put a 4' piece into the 
bottom section to strengthen it where I clamped it to the cantilevered 
4x4's.  I built a full size 4 square with this technique and it stayed up 
for the 7 years that we lived in SoCal.  I guyed my towers at the 25' and 
55' levels but it really only needed the 25' guys.  Any questions, call me 
at 813-643-3034

Bob  W6TR
Valrico, FL
----- Original Message ----- 
From: "Pat Chiles" <chilesp at adelphia.net>
To: <towertalk at contesting.com>
Sent: Friday, November 03, 2006 10:27 AM
Subject: [TowerTalk] Questions about Irrigation Pipe for Verticals


>I am in the process of putting together a project that will consist of 
>phased 1/4 wave verticals for 80 meters.  For my QTH the most cost 
>effective resource of aluminum tubing is 3 inch irrigation pipe.  The wall 
>thickness is .050 and it comes in 10, 20, and 30 foot lengths.  Since I 
>will have to transport it myself I will probably buy the 20 ft lengths.  I 
>am wondering what some of you have done to splice sections together?  How 
>you varied the length of the vertical for adjusting the SWR.?  Finally, How 
>did you get it vertical?  Thanks
>
> Pat, K8PC
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