I'm planning some antenna changes for when things thaw out up here in Anchorage, and one of them will involve setting up a Rohn H50 mast. For guy lines I was planning on using 3/16" dacron, and for tensioning them I was thinking about using the little 3-hole guy tension blocks that Penninger Radio sells:http://www.penningerradio.com/gallery.asp?id=31&cc=
My worry is that they seem to be intended for temporary guying and may loosen over time with wind and vibration. I really like the simplicity though, which is why I'm leaning towards them instead of turnbuckles.
This will only be supporting an OCF dipole, nothing heavier, but I certainly don't want to have to reset the tension on the guy lines on a monthly basis.
Thanks in advance for your comments and opinions,