[TowerTalk] sealing conduit

Gene Smar ersmar at verizon.net
Thu Jul 31 20:33:37 EDT 2008


     For ten years before I installed my tower in the back yard, I had a bunch of wire antennas strung through the trees.  The coax to these antennas exited my shack through the crawl space underneath via a 4-inch hole I cut into the header board with a hole saw.  

     I then installed a drier vent assembly (for a clothes drier exhaust) into the hole and ran the coaxes out that way.  I used a large piece of fiberglass insulation to plug up the hole, yet allow for future additions to the antenna farm.  Worked great, lasted a long time and was cheap.

     The trick is to ensure that the conduit opening points downward so that the insulation doesn't get rained on.

73 de
Gene Smar  AD3F

From: W5CPT <w5cpt at bellsouth.net>
Date: 2008/07/31 Thu PM 07:29:27 EDT
To: Gregg Seidl <k9kl at centurytel.net>, TowerTalk at contesting.com
Subject: Re: [TowerTalk] sealing conduit

I have had great luck with Copper Scrubbies.  I buy them in the Kitchen department at Wal*Mart in packs of 4.  I stuff them into the open ends of my conduit (2 inch) and can easily remove and reinsert them. They keep the critters out (and I have lots around) I think because they don't like to chew on metal, and still allow the conduit to breathe.

Clint - W5CPT
  ----- Original Message ----- 
  From: Gregg Seidl 
  To: TowerTalk at contesting.com 
  Sent: Thursday, July 31, 2008 6:20 PM
  Subject: [TowerTalk] sealing conduit

  I'm wondering how other seal conduit runs out to the towers.
      I installed 4 inch non-perforated drain tile to both my towers.MUCH MUCH 
  cheaper then pvc conduit.I want to seal the ends up in a way to keep 
  critters out.I'm not too worried about water because I believe it is 
  impossible to keep water out no matter what you do.I use cables cables that 
  are direct burial..I also want to allow it to "breathe".I thought of used 
  that foam stuff that you can use to seal up cracks around your windows and 
  such.Then I'd drill a small 3/16 maybe hole behind  the plug to allow it to 
  breathe.Plus this way when I get a stupid idea to install another antenna 
  all I need to do is get the stuff out which is easy.
      I'm always open to other ideas.  Gregg K9KL 


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