First, learn to use 2 hands up the tower, having to hang by one arm is not a
good thing for doing lots of work. Then put a bunch of feed-throughs on the
box even if you don't have a use for them right now. you can also put 2 or
3 small cables through one feed-through if needed.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net
-----Original Message-----
From: Hans Hammarquist [mailto:hanslg@aol.com]
Sent: Friday, April 19, 2013 20:48
To: towertalk@contesting.com
Subject: [TowerTalk] utility box and feed-throughs
I am planning to put a box near the top of my tower and use it for various
signal wire connections such as rotator cables, antenna switches etc. My
idea was to pull a multi-conductor cable between my shack and this box, have
several screw terminals in the box to attach whatever I need signal and
power for. (Yes, I have a 115 V output in the tower already. It has survived
several winters so far. No, I don't have power on it unless I need to.)
In order to make the box reasonable water tight I plane to use regular,
sealed feedtrough for the cable. My dilemma is: What feed-through do I use
for the cables between the rotators and the switches etc and the box? I can
add a sealed feed-through each time I need a new connection but that
requires me to make a hole in the box and put a sealed feed-through each
time. Not a big deal if yuo are on the ground or in your work shop but
hanging by one arm, 80 feed up does not appeal to me.
Is there anything out there made for this purpose? It needs to be very easy
to use, be able to accept several cables, if so small and it needs to be
able to seal out at least insects but water is also not very welcome.
73 de,
Hans - N2JFS
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