In a message dated 98-05-20 21:07:09 EDT, kb7ww@chatusa.com writes:
> I know have seen this in print and now can't find it. What size mast
> comes the closest to running on center in the Ham-M??
Two inch for all practical purposes. The manual says "the maximum mast
diameter that may be used is 2-1/16" OD. We recommend 1-1/2" nominal steel
pipe with 1.9" OD in standard wall thickness". (You'll almost never see a
recommendation on TowerTalk to use a steel pipe as a mast. There are a couple
of exceptions.) I would strongly recommend using 2.0" carbon steel tubing for
a mast. Not only is it stronger but I think it won't turn as eccentrically as
the 1.9" OD pipe.
Shimming a 1.5" OD or similar mast is practically impossible. Avoid if
possible.
Cheers, Steve K7LXC
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