Tom:
FWIW - All the cage type installations I've seen in print have used
insulating material for the spreaders. For example, the K1ZM support for the
wires of his shunt-fed tower uses wooden dowels in the form of a cross. I use
PVC pipe in the form of a T. And the cage dipole articles in QST and the
Handbook have all shown insulated, cross-arms, usually wood.
If you attempt to use aluminum, you have the issue of mechanically
connecting the metallic spreaders to the copper wire. Then you have the issue
of sealing this connection to prevent Galvanic corrosion. Then you have the
additional issue of weight....
Maybe I just answered the question for you.
73 de
Gene Smar AD3F
> Hi All
>
> Thinking about putting up a cage vertical for 80 meters. Would it be better
> to use insulated spreaders, like small PVC pipe, or pieces of aluminum
> tubing for spreaders. Thanks
> Tom W7WHY
>
>
> _______________________________________________
>
> 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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_______________________________________________
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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