1.. I have Andrews 7/8 Helix from the shack to the tower top. What coax
(with type N connectors) would you recommend to go up the mast to the antenna?
2.. I can install my rotor and SteppIR control cable up the inside of the
tower either with 1 inch plastic conduit, which would be ½ inch from the tower
legs so the plastic conduit will be free to move up and down with temperature
and weather change. Or I could secure it directly inside the tower secured by
SS hose clamps over rubber tape and or Scotch 88 tape. I read some time ago
that running the cables inside the tower framework next to one of the legs
would add act as a faraday shield which would help protect the lines from EMP
(nearby lightning). The problem with it secured directly to the tower leg
would cause the SteppIR control cable to turn color and maybe have a premature
life. The plastic conduit is the type that is UV protected. I would only have
to have a small nylon rope taped to it every so often to prevent the cable from
stretching from its own weight. The nylon rope would be secured in a conduit
box at the top of the tower. I prefer the conduit but what if lightning does
hit, will the cables have the same protection inside the conduit verses secured
directly to the tower leg inside the tower. What do you think or prefer
assuming that the extra work and cost were not a variable?
Thank you, Fred Mott, AB8AH
_______________________________________________
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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