[TowerTalk] Break-aways for Tree Installed Wire Antennas

[Jim Thomson]

Date: Sun, 7 Jul 2019 14:21:34 -0700
From: Jim Brown <jim at audiosystemsgroup.com>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Break-aways for Tree Installed Wire Antennas


<I hire climbers to put pulleys high in the trees, then use Synthetic 
<Textile rope with a weight on one end, the other end tied off. I find 
<that the rope does NOT last forever in my tall redwoods -- tree sway 
<causes the UV-resistant outer jacket to fray around the pulleys, 
<exposing the UV sensitive inner braid. I've had this happen in as few as 
<five years. The trees are 200 ft redwoods, and the pulleys are around 
<140-150 ft. My guess is that this isn't a problem for shorter trees. :)

<73, Jim K9YC

###   Why not  use  .125  or  .1525  galvanized   winch  cable ? 
Use  correct  pulleys....... and  end of problem.  

##  Or  SS  winch  cable....and  SS   pulleys. 

Jim  VE7RF