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Re: [TowerTalk] Sealing cables at PVC exit?

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Subject: Re: [TowerTalk] Sealing cables at PVC exit?
From: "K8RI on Tower talk" <>
Date: Sat, 15 Jul 2006 13:28:43 -0400
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Second photo from the top.

The conduit enters the box from the right side in the photo.  The cables 
exit the box down through the one foot long vertical stub on the left.

The second photo from the top shows how the stub is sealed to keep out bugs 
and critters. I use the "soft" expandable foam "in-a-can" that you can find 
at Lowes, Home Depot, or most any hardware store.  There are two kinds of 
foam-in-a-can that I've seen available. One is a yellow foam that becomes 
rigid and expands. Use it around a door frame of windown and it'll never 
move again. <:-)) but it would probably work in this case.  However I much 
prefer the soft white stuff that is relatively easy to remove. You patch it 
with another shot of foam from the can.

Incidentally the conduit no longer comes in through the basement wall, but 
rater through the end plate between the floor joists.  Outside is a smaller 
version of the NEMA 4 (Hoffman box) mounted on the side of the house and 
painted to match the siding.

Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2

>I am using buried 4-inch PVC pipe to run coax and control cables from
> shack to tower base. The PVC come out of the ground, turn horizontal,
> and end a foot or two above the tower base. The cables will exit the
> PVC, take a small drip loop, and get routed onward.
> What is the best way to seal the end of the PVC around the cables? I
> thought about using a PVC end cap and drilling holes, but adding a
> future cable would be difficult. I am interested in hearing what
> creative solutions others have found.
> 73,
> Paul
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