[Towertalk] Rotor Loops

[Lee Noonan]

I wrap the coaxial cable around the mast loosely - about 4 foot long so it
can go back & forth with out twisting My Belden 9913 cable.  I don't like
the idea of the making the cable twist itself.... It must be detrimental in
the long run...
73
Lee  VK2LEE


----- Original Message -----
From: "Marc Holdwick" <n8kwx2@attbi.com>
To: <towertalk@contesting.com>
Sent: Sunday, November 24, 2002 10:27 AM
Subject: [Towertalk] Rotor Loops


> I just checked the archives and didn't see anything that addresses my
> question:
>
>
> What is the proper way to do a rotor loop?
>
> It seems that the usual way is to fasten the coax parallel to the mast
just
> above the top of the tower do a U shaped loop (in a vertical plane) and
then
> refasten it parallel to the tower legs.
>
> I was playing around with this and it seems that it transfers the rotation
> of the mast into torsion of the coax.  Is torsion "good" for coax?  (I'm
> planning on using Cable X-Perts' CXP-1318FX [LMR-400UF equivalent]).
>
> Another method that I can envision is to have the coax come off the mast
and
> tower PARALLEL to the horizon and do the loop in the horizontal plane.
Now
> the coax will coil and uncoil versus twisting.
>
> Would this be better for the coaxial cable in the long-term?
>
> Any comments?
>
>
> Thanks & 73,
>
> Marc - N8KWX
>
>
>
>
>
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