[TowerTalk] Long cable pull

KI9A at aol.com KI9A at aol.com
Sat Jul 19 18:56:22 EDT 2008

Wow..loaded question.
I am an Electrician, with a bunch of experience pulling long runs. Here are  
a few things to consider.
1) Do you plan on pulling this by hand? If so, get help, and use a bunch of  
wire lubricant.
2) I would break the run up at least once, mid way if you can.  Every  100 ft 
would be best, that way you can use a 100' fish stell to get the rope in.  
You can buy a quazite box that you can bury. That way, if you have trouble  
pulling it, the reason is obvious.
3) You can get a line in the conduit several ways. a) rent a duct rodder.  It 
is a coil of varying length of fiberglass rod, about 3/8" diameter. b) buy or 
 rent a "mouse" set, and use a vacuum to blow it in. Might need a second vac 
on  the other end to suck it in at the same time. A mouse is a foam pellet 
about the  inside diameter of the conduit. You attach a thin string to it, and 
use that to  pull a heavier rope in.
73- Chuck KI9A
In a message dated 7/19/2008 5:14:50 P.M. Central Daylight Time,  
RadioIR at charter.net writes:

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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