Thank you everybody for your help! Following the advice given so far, my
design is currently as follows:
The lower section of mast is 12' of 6061 aluminum, 2" diameter, 1/4" wall
thickness. This will be resting on a base stand (with some rocks piled on
it for good measure) at the bottom, and be attached to the wall of the RV
with 3"-wall standoff brackets at 2' up and 7' up.
The upper section of mast is 12' of 6061 aluminum, 1-1/2" diameter, 1/8"
wall thickness. _IF_ by some miracle, it happens to telescope, that's
great, but my assumption is that I will bolt this side-by-side to the lower
mast at three places, using #6 SS bolts (4" long). Just below each antenna,
we will attach guys running forward and back along the RV.
Am I missing anything important?
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