[TowerTalk] Hauling hardline into a 4 inch cable duct

[Fred Serota]

I recently had an issue with intermittent SWR spiking. After running down 
all the connectors, checking for water seepage and replacing the coax switch 
and lightening arrestor, I finally found the issue when I pulled the coax 
out of the conduit and found a place, about 2" long where the coating had 
been scraped off and there was bare mesh visible. Unfortunately this was 
right at the low point of the run, where the water would temporarily pool 
with a heavy rain, before draining out of the tubing. I now have the coax 
laying on the ground where I can check it periodically. It might be best 
practices, but must be instituted very carefully. I may even raise it up 
with some support before the winter and it is under snow.

Fred, K3BHX

-----Original Message----- 
From: Jim Brown
Sent: Wednesday, April 15, 2015 1:57 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Hauling hardline into a 4 inch cable duct

On Wed,4/15/2015 6:50 AM, Alan Ibbetson wrote:
> How do you guys at big stations do it?

Mine is a medium-size station. I have two 230 ft runs of 7/8-in hard
line laying on the ground, then running 120 ft up the tower. There's
another run of cobbled-together coax, mostly 1/2-in, as well as control
cable for rotator and SteppIR. Everything is laying on the ground. The
ground they're laying on is my woods. :) In about five years, no issues.
The CATV-type RG6 for my two Beverages is also laying on the ground, no
issues in about 9 years.

K6XX has a much larger station up the road from me, and he does exactly
the same thing. The longest of his runs are about 800 ft, including the
run up the tower.

73, Jim K9YC
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