In the early 1980's JM Tull Metals produced a 2" OD with at least .25 wall
that sounds like what W3YY was mentioning. Several local hams contacted a
Mr. Smith who was a Vice President and he told them of a 20 foot stalk that
Tull produced for telecommunications applications. Dan Britt K4UCK (SK)
gave Mr. Smith
his requirement for 3 stacked 5 element Hy-gain beams. The piece that Smith
came up with cost about $250 in 1981 dollars. I recall the wall varied from
.25 to nearly .5.
Dan and about 5 or 6 others had the mast up and some are probably still up
today. JM Tull is now Ryerson/Tull but I assume they still make this type
of aluminum that is good for masts.
Dan's mast went thru a nearby Tornado that took down a BC radio tower that
was guyed to the hilt.
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