Dick, NY1E said
Lets not get carried away, 4-5 feet of 1.5" (1.9 OD) water pipe is fine for
your antenna...Works for many 40 meter beams 10' above the tribander...
Sorry but schedule 40 water pipe is not designed to carry an antenna much
above the top of a tower. Water pipe is designed for inside flow and easily
bends in a wind. And a 40 meter beam 10 feet above a tri-bander is a
disaster waiting to happen.
Towertalk archives should have plenty of notes on this matter. Better
choices include steel masts from say US Tower or heavy wall aluminum.
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