[TowerTalk] Long cable pull

N3XX n3xx at charter.net
Sun Jul 20 09:23:38 EDT 2008

On my conduit runs here, I don't use sharp turns coming out of the ground, 
because that's what will cause most of the resistance when pulling in the 
cables.  I just let 10 or 15 feet of the conduit bend up gradually, coming 
up out of the ditch until it's about a foot above ground.  Then, after 
pulling in the cables, I feed the ends through a 90, and place the 90 onto 
the conduit end.  I leave this unglued, so it can be removed for future 
cable pulls in & out.  Doing it this way, I have never found any need for 
cable lube or pull boxes.

Tim - N3XX

----- Original Message ----- 
From: "K4SAV" <RadioIR at charter.net>
To: <towertalk at contesting.com>
Sent: Saturday, July 19, 2008 6:13 PM
Subject: [TowerTalk] Long cable pull

> After being disappointed in the direct burial method, I am planning on
> adding some conduit to access my low band receiving antennas.  I have
> one section of conduit that is 500 feet.  Can I do this with one pull,
> or will I be wishing a I had added an access box and broken the pull up
> into two parts? I have never pulled a 500 ft run before.  Since it is
> unlikely that I will ever want to add another cable into this conduit, I
> was planning on using 1.5 inch conduit.  The run will be straight except
> for a couple of very long curves and then the curve at the exit out of
> the ground at the ends.  I need to pull one run of RG6 and one run of 16
> ga landscape lightning cable for dc.
> Before someone suggests sending the dc down the RG6 to eliminate a
> cable, the dc resistance of 635 ft of RG6 is about 22 ohms.  (It's 625
> ft total to get to the operating position.)  Besides the RG6 already has
> dc controls signals on it as well as RF.
> Second question: What is a good method of putting the pull string in a
> conduit this long?  I have put it there when building the conduit, but
> that is a pain.  I have used an air compressor to blow a string tied to
> a rag thru the conduit, but never on a conduit this long.  Is that
> likely to work?
> Jerry, K4SAV
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