[TowerTalk] Coax Run To Tower

Tom McAlee tom at klient.com
Mon Aug 7 18:26:09 EDT 2006

W3LPL covered the coax question.  But, here is a suggestion about the 
switch:  put it at the base of the tower!

We learned that lesson the hard way during WPX CW this year in the KD4D @ 
N3HBX M/2 effort.  There is one feedline running to each of the four 200' 
rotating towers, with a switch on each tower.

One of the switches fried and we could not select any antenna on the tower 
that has the 2el 80m yagi and the 7/7/7 15m stack.  The switch was at the 
140' level.  Had it been closer to the ground, we would have been easily 
able to replace it with a backup (if available) or at least bypass it with a 
barrel connector to select an antenna.

A switch near ground level is not only quicker to fix, but doing so is not 
dependant on daylight or nice weather.  You'll appreciate it when Murphy 
makes his contest-weekend visits!

Tom, NI1N

----- Original Message ----- 
From: "Keith Dutson" <kdutson at sbcglobal.net>
To: "TowerTalk" <towertalk at contesting.com>
Sent: Monday, August 07, 2006 5:41 PM
Subject: [TowerTalk] Coax Run To Tower

>I have to make a rather long run from the shack to tower, about 500 feet.
> This tower will have 2 el 80 + 8/8/8 stack 10 + log periodic covering 
> 30-10.
> What kind of coax would you run assuming only one line is needed, switched
> between the three arrays?
> 73, Keith NM5G

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