The name of the manufacturer I couldn't remember was Everson. I would
imagine it may only be available locally here on the left coast but the
info and URL is at https://www.eversoncordage.com/tarred-seine-twine.
Used by the fishing fleets for many purposes from net to on-board needs.
Living on the ocean I can attest to its ability to withstand the
elements and have never had one break, even under our terrible winter winds.
Don W7WLL
On 4/19/2019 8:25 PM, Don wrote:
That is what I use out here on the left coast, a tarred twisted line
that is produced by a firm (Evanston?) up in the Seattle area. Used by
the fishing fleets up and down the left coast for numerous purposes.
I've never had one break under the most severe conditions. Do need to
secure the ends because it is twisted. A little flame or dipped in
resin. Available at ship chandlers and suppliers. Withstands salt, UV
and rain. I have one antenna that it has held up for 17 years and
still looks good.
Don W7WLL
On 4/19/2019 8:15 PM, Keith Dutson wrote:
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@contesting.com> On Behalf Of Jim
Brown
Sent: Friday, April 19, 2019 1:29 PM
To: towertalk@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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