I used gray PVC to insulate my homebrew 54' freestanding vertical at P40A
and it worked perfectly, even with the strong UV. Using this material with
U-Bolts is a good way to make an insulated element, especially if it is a
Subject: [TowerTalk] Building a W6NL Moxon 40 Meter Beam.
From: "Jim Thomson" <email@example.com>
Date: Tue, 5 Aug 2014 19:22:00 -0700
## That grey coloured pvc tubing works superb..and is UV resistant. You can
in the electrical dept at any home depot etc. Its not a foam core
found that my F12
U bolts have all rusted. Replaced with DX eng SS types with the solid AL
saddles. Drives me nuts
not using proper saddles. F12 never used saddles.
## On my F12 340N, I replaced the flat AL plates that in turn bolt to the
riveted boom brackets..
with 4 inch wide channel AL. Then used TWO dx eng ss u bolts at each
the channel. For
whatever reason, my flat plates had all bent slightly. A pair of new
insulators installed. f12
uses 1.875 inch OD tubing the middle of the 40m eles..and of course the grey
pvc tubing is a lot bigger than
that, hence the 4 inch channel al. The pvc tube is simply slit length
wise in a bandsaw.
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