[TowerTalk] Hauling hardline into a 4 inch cable duct

[Mike Ashby]

Great question Alan, I would like to know also.
Mike  W7PIM

> Date: Wed, 15 Apr 2015 14:50:05 +0100
> From: alan at g3xaq.net
> To: towertalk at contesting.com
> Subject: [TowerTalk] Hauling hardline into a  4 inch cable duct
> 
> I have a 210ft run of 4 in smooth bore plastic cable duct going in a 
> straight line 3ft underground from outside my shack to a small shed at 
> the base of my tower. There is a brick-built man hole (aka inspection 
> chamber?) 3ft x 2ft 6in at each end.
> 
> Presently I have LDF2-50A in the duct but it's a tad lossy and I have 
> the option of some LDF4-50A or LDF5-50A coax.
> 
> I have a draw rope running through the duct and a pulley set into the 
> floor of the man hole each end just outside the duct opening but I am 
> wondering how easy it is doing to be to pull either of these thicker and 
> heavier cables into the duct?
> 
> How do you guys at big stations do it? Will 3/8" polypropylene draw rope 
> and a strong young man (ie not me!) be able to do the job, or are we 
> looking at steel wire rope and a power winch?
> 
> Thanks,
> 
> Alan G3XAQ
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