Great question Alan, I would like to know also.
Mike W7PIM
> Date: Wed, 15 Apr 2015 14:50:05 +0100
> From: alan@g3xaq.net
> To: towertalk@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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