On Fri, 5 Jun 2009 19:48:48 EDT, K7LXC@aol.com wrote:
>So how much exposed mast will you have below the antenna (top of tower
>to antenna spacing)?
I plan to use a G1000 rotor and a 25AG3 top section, and the rotor shelf is 42
inches below the top of the tower. That will put about 3 ft of mast inside the
tower. I can use any length of exposed mast that is structurally suitable.
>The proposed material is really 1.9" OD, which is a little skewed
>from normal 2" OD ham equipment but probably not enough to be fatal. The
>SteppIR mast clamps are a really tight fit on 2" tubing so I imagine there
>will still be a sufficient fit for a reliable albeit slightly smaller
>installation. A 3L SteppIR is a relatively small load so given your proposed
>installation, it'll probably be fine.
Thanks Steve. I measured the i.d. of the mast tube built into the top section.
It's 2.05 inches.
Mike said:
>The Steppir tends to slip on anything slightly smaller than a 2" mast, if
>you go this route use DX Engineering clamps, actually I would use them
>anyway.
Thanks for all the thoughtful comments.
73,
Jim K9YC
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