Re: OT: Routing coax near CAT5

Posted by Vic K2VCO on May 26, 2007; 7:04pm
URL: http://elecraft.85.s1.nabble.com/OT-Routing-coax-near-CAT5-tp448126p448134.html

Craig Rairdin wrote:

> So my question is, is all that RF going to interfere with my network
> connection or my phones? Any thoughts or recommendations?

If the coax is properly decoupled from the antenna there will be no RF
on the outside of it. So it will be no more likely to interfere with
anything than a water pipe.

'Properly decoupled' means that if you are feeding a dipole, for
example, there should be a balun at the feedpoint and the coax should
come away from the antenna at right angles to the elements for as far as
possible. A vertical should also have a choke or bead balun at the
feedpoint.

Finally, if the coax does not run at a right angle for enough distance
('right angle' and 'enough distance' are relative to how much RF on the
outside of the coax you can tolerate), you can add a choke or bead balun
right outside the box.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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