The Radioworks site has a summary of the characteristics of synthetic rope materials. In summary, polyester (Dacron) and Kevlar (with a jacket) are good.
Here's some more thoughts on support ropes for antennas:
* 5 page QRZ forum thread
* A similar thread on eHam
* Discussion hosted by K5ZD
What antenna support rope do you use? What's succeeded and what's failed? Your comments are invited below.
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