On 9/5/19 4:04 PM, J Chaloupka via TowerTalk wrote:
I have recently been made aware of a superior roping used by sailboaters and others.
It has what I think are excellent characteristics that seem to apply to antennas.
The product is named, DYNEMA. Supposed to be stronger than steel and is sometimes
used in winches.
Here is a link to it.
Spectra / Dynema / Amsteel Ropes and Lines
it's also used in fishing line. It's what is called a liquid crystal
polymer and is known for low stretch (like Spectra).
I've not used it as rope, but I've used it as a monofilament.
There's lots of synthetics that work well. Your practical concerns are
weather resistance, stretchy-ness (good in climbing ropes, not in
halyards), and failure behavior. Choose what works in your application.
Steel is cheap and doesn't have UV issues.
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