I have stacked these as tall as 44' (ten sections) with help. They were guyed
at the top and about mid way. I used them to support a 40M half Square. They
stayed put until a tree came down on the half square and a few of the sections
splintered.
Withnthat thought in mind, the coating on them is not super weather worthy. I'd
suggest a good flat black paint (auto store stuff that binds to plastic) to
provide some UV protection. After a year in the air, mine had all sorts of
fibre exposed making it uncomfortable to handle without gloves.
I was able to walk seven sections up alone and tie the guys off, anything
taller is very flexible and better done with two or more folks. Also, I
drilled and tapped holes for screws to keep the sections together (particularly
for erecting it) It may have been overkill, but I felt more comfortable with
that configuration.
They should work well for a K9AY antenna.
74,
Julius
n2wn
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