Stan, W7NI, has (hope he still does) an excellent design for side mount
support for antennas. I have used his design and rotate 5el 10M and 4el
15M monobanders on a Rohn 45G getting about 300 deg rotation. Both yagis
on a single swinging gate type mast of my design and use T2X rotator. NO
PROBLEMS AT ALL IN 7 YEARS. Contact Stan at <w7ni@teleport.com>. Believe
Stan's mounts were galvanized.
73 de Arne N7KA
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