> ...using "much thinner tubing" needs to be clarified, because it is
> generally inaccurate.
> The tubing wall thicknesses are set depending on...
> The second thing is that we use 6061-T6 tubing, NOT 6063. This makes the
> slightly thinner 6061 as strong as the 6063, but has less weight.
Sure. But the diameter is what determines wind load (in the absence
of traps etc.), and it is a fact, based on the comparable antennas
from both manufacturers that I own, that the Force 12 elements are
smaller diameter. It also follows that a smaller diameter element
needs to have thicker walls and/or fancy alloys if it has to have the
same strength, although of course its ultimate load is less due to
the decreased surface area.
In the context of what I was saying, the reduced wind load is an
advantage. Lower wind load means lower system cost, as you don't
need large towers and rotators.
Chris R. Burger
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