[TowerTalk] Durability of Mastrant rope

[Chuck Gooden]

I use 3/16" black Mastraint double braid rope for my wire antenna's and 
have not had an issue.  I also use large screw in eye bolts into the 
trunk of trees (~12 inch dia) that support the end of the antenna's to 
attached the rope too.  I also support the center insulator off of my TV 
tower using the rope and attach the feed line to the tower using nylon 
UV resistant tie wraps.  I leave a little slack in the antennas to allow 
for wind.  The antennas have been up for 3 years and have not had any 
issues here in Northern Illinois.

YMMV

Chuck K9LC


On 4/19/2019 10:05 AM, Nidhog wrote:
> For the rope over the tree, find a good, marine grade pulley of the correct size for the rope. Rope on the end of the antenna goes through the pulley to a weight (Bucket of rocks?). Tree moves, rope in tree doesn’t.
>
> Sent from my iPad
>
>> On Apr 19, 2019, at 08:04, N4ZR <n4zr at comcast.net> wrote:
>>
>> I have been using big box store "parachute cord" for antennas, but have found it quite fragile in real life - for example, the center support of my Carolina Windom came down within 2 weeks of my installing with with a tennis-ball launcher.  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.
>>
>> Has anyone had experience - good bad, or otherwise - with the Mastrant rope sold by a number of ham radio suppliers?  Any other suggestions for support that may be more durable?  I'm willing to go to bigger rope if that would help - Mastrant quotes working strength of up to 900 pounds, but I don't know how resistant their rope is to chafing.
>>
>> -- 
>>
>> 73, Pete N4ZR
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