I'm in the process of installing my 70' Rohn 45 tower. I'm looking at where the
rotator is placed in reference to the top of the tower. I'm using a 21 ½ foot
mast (1/4 wall chrome molly etc). I'm using a Rohn 45AG4 top section with a
heavy duty thrust bearing on the top of the tower. I will be using a Orion
OR-2800 rotator.
The lowest that I can get the rotator plate in the tower is 3 feet below the
top of the tower.
I will be putting a 2 element 40 on the top of the mast and a TH7 just above
the thrust bearing. I want to keep as much spacing between the 2 antennas as
possible. I estimate about 14 feet between the 2 antennas with the boom support
of the 2EL 40 at the very top of the mast.
How much stress will this put on the top of the tower? How about on the
rotator? Too much? What about changing the rotator? The sort end of that mast
could get a little unruly!
Opinions please...
Thanks and 73!
Jim W7RY
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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