[TowerTalk] Durability of Mastrant rope

[Keith Dutson]

In 1984 I bought a roll of tarred nylon cord (trot line) to string up a 160 meter dipole in the trees.  I think it was 440 pound strength.  One end got stuck and had to be cut to get the wire down several years later.  That line still is visible today, hanging down from that tree.

73, Keith NM5G

-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Jim Brown
Sent: Friday, April 19, 2019 1:29 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Durability of Mastrant rope

Was the antenna installed with pulleys and a weight on one end?  Any antenna rigged between trees without that method WILL be on the ground when the wind blows hard.

I use Synthetic Textiles antenna rope sold by several ham vendors. It's good stuff, but the outer jacket of the 5/16-in rope eventually frays and breaks where it goes through the pulleys, and must be replaced. I've gone to the 7/16-in rope for my high dipoles between redwoods.  In this rope, the strength is the interior white rope, while the black outer jacket protects it from UV.

73, Jim K9YC

On 4/19/2019 5:04 AM, N4ZR wrote:
> It was held up by a 70-foot pine tree, and my guess is that either the 
> wind caused it to be over-stressed or chafing against branches caused 
> it to fail.


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