[amsat-bb] Re:Cross boom question

["Mark D. Fossum" <n0nsv@xxxxxxxxx>]

Tony:

Here's an idea. Contact M2 and order the 2" crossboom kit that they sell. It's a
little pricey but worth every penny in my opinion.

While living in North Dakota I purchased the kit. It has a 12" X 1 1/4" center
shaft to go through the elevation rotor. Then you slip the 2" X 5' fiberglass
pipes over the shaft and pin it on each side with bolts and self-locking nuts.
Here's the great part: When I ordered mine, M2 sent along a 2' chunk of 1 1/4"od
solid fiberglass. I cut that in half stuck one in each end of the fiberglass
pipes to accomodate the 1 1/4" mounting hardware that came with my KLM antennas.
This combination spread everything out to almost 12' wide leaving me with plenty
of room for a 2.4gig dish and a 1.2gig helical in between the 2m & 70cm
antennas.

Guess what... the whole thing withstood the gusty winds & freezing temps of
North Dakota and worked great to boot.

Good luck on the project. Remember, overbuilt is better built!

Mark


> Tony/AB2CJ wrote:
> >
> > Greetings all
> >
> > Whats the best  nonmetallic cross-boom material to use for satellite
> > antenna elevation rotors?   I've used a 10 foot PVC pipe reinforced by
> > a wooded pole in the center for years....  it works, but it isn't as solid
> > as it should be.
> >
> > Any suggestions??
> >
> > Please reply direct
> > Thanks,
> > Tony, AB2CJ
> >
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