On 8/24/2011 8:17 AM, Jim Hoge wrote:
> You have missed two issues with pushup masts. The are not designed to carry
> the
> topload weight nor will the clamps tolerate the torque load of a tribander and
> rotator. All is not lost though. You can use the mast as support for wire
> antennas and/or a vhf/uhf antenna.
That's all relative. About two years ago, my neighbor loaned me a
four-section push-up to use for building and testing mono-banders for
15M and 10M. We lashed it to a deck about 30 ft from my shack, extended
it to about 20 ft, guyed it at two levels, and added a small rotor. We
built and tested the 4-el 15M beam first, then took it down and built
and tested the 4-el 10M beam. That 10M beam has been there for two
years, and I plan to leave it therel. I'm building a tower for the 15M
beam. No, I wouldn't use it long term for something as big as that 15M
yagi.
73, Jim K9YC
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