> A couple weeks ago I asked opinions about how to advise a friend
>of mine who wanted to mount a mast through his roof. He has decided
>against doing it that way for a variety of reasons, probably including
>some which were expressed in the responses I received.
>
> He has begun looking at the idea of a roof tripod. The antenna
>he will mount will be a Mosely CL-33 tribander (I think it is about 5 or
>6 sf wind area). He is considering one of the roof tripods by Glen
>Martin Engineering. He also would like to use a long enough mast to get
>the antenna about 10 feet above the tripod. My questions are:
>
> 1. Has anyone had any experience with this particular brand of
> tripods? I believe I've heard good things about some of the
> products made by Glen Martin, but I have no experience with
> roof tripods. (The wind ratings he read to me will be more
> than adequate for this antenna.)
>
> 2. Is it possible for him to safely mount the antenna on such a
> long mast above the top of the tripod? Intuitively this seems
> like it will put too much of a strain on the tripod. (I also
> don't have any idea how the antenna can be safely installed
> by the worker.) It would seem to me that the tripod will need
> some sort of guying if the antenna sits very high above it.
>
> Any ideas will be appreciated.
>
>73, Dave Clemons K1VUT
When faced with this problem in the past (for my customers) I've usually
elected to use a Rohn 45 top section mounted on a custom base. The base
can be designed a number of different ways as long as it spreads the forces
out over a large enough area.
This method has quite a few advantages, including ability to add another
section if more height is desired.
--
Steve Maki K8LX
steve@oakcom.com
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