Hi Pat,
About 16 years ago I bought a HAM IV. I was told that I was the
third owner, but have no idea how old it was at the time. I mounted it
inside my Rohn 25, using a thrust bearing. On top of the tower I have a
HyGain 155BA and HyGain 105BA (just converted to a CA), with 6 feet space
between them. (Actually, the 15 meter yagi is on top.) I believe that the
sq. ft wind load for the two of them is just under 10 feet. I have had
absolutely no problems with this little gem of a rotator. Hope this
gives you something to go by.
73, Dave Clemons K1VUT
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