[TowerTalk] Hauling hardline into a 4 inch cable duct

[Keith Dutson]

Excellent question.  I wish I had an answer.  I am planning to run 1 piece
of LFD4-50A and three pieces of LDF5-50A to the shack.  I have heard it can
be buried, but would prefer conduit.  I am now thinking 6 inch for the 30
foot run from the tower, to allow for additional cables in the future.

73, Keith NM5G

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Alan
Ibbetson
Sent: Wednesday, April 15, 2015 8:50 AM
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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