[bars] Coax runs through attic?

[gmm]

Hi Tim:

I think you were referring to LMR-400 Coax.

Since this coax has a 100% foil shield, and copper braid, you should be 
in good shape.
The 100% foil shield is the key item.

The foil will block most of the AC RF noise.
When you do have to Cross over some AC wires, try to cross them at a 90 
degree angle.
Try to avoid running parallel to AC power cables when possible.
Also Distance is good, stay as far away from AC cable as possible.
I don't think you will have any issues AC noise penetrating the foil 
shielded cable.

enjoy
Miles



On 2/9/2023 9:35 AM, Tim KC1RET wrote:
> Greetings,
>
> I'm contemplating the placement of the aptly named 'Franken-beam' and 
> one of the likely locations would require a coax run (AMR400) the 
> length of my house.  One of the easier routes is through the 
> unfinished attic space (approx 40ft). There is an HVAC air-handler and 
> an attic fan in the space but it is otherwise unused.
>
> I'm wondering if I am inviting QRM from devices in my house, power 
> lines, etc. with such a run.  I would elevate it by running along the 
> peak rather than along the floor, mostly to avoid someone stepping on 
> it or 'critters' noshing on it.
>
> 73,
>
> T.
> -- 
>
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