Roy Lewallen wrote:
For about 20 - 25 years I've had four verticals of about 33 foot height
in my back yard. They're free standing, no guys. They went through one
wind storm with gusts in the 80 mph range, and all other weather,
without damage. Each is made of three pieces of telescoping 6061-T6
tubing, 1-1/4, 1-1/8, and 1 inch diameter.

[trimmed]

Roy,

Thank you very much. There's nothing like tapping the experience of
others. I'm really happy to hear I can build a freestanding vertical!

(But, I'll buy some spare aluminum anyway..)
--
73, Hank