[RFI] Adding a shield to the utility service lines?

Aaron Kreider aaron at campusactivism.org
Thu Dec 5 00:33:18 EST 2013

Have you ever heard of a shielding product that would clamp on to 
existing utility service lines?  I'm interested in shielding the service 
lines from PECO that run in a T shape on my small city lot. Ideally 
there would be EMT that could clamp on to them, like how the hot water 
copper pipe insulation works.

I guess I could cut emt into half and then fit them back together. It'd 
need to be fairly light.

Another crazy option is to use a metal conducting paint and paint the 
power lines.   There are paints designed for RFI shielding.  I could 
spray them, but it'd be hard to get full coverage.

This might be a crazy idea, but it is more likely to work than me 
putting up $200 of ferrites on the power lines - as I don't have any 
slack in them and would have to use the monster choke clamps. The 
ferrites might help a bit, but possibly only 1-2 db - whereas with a 
better shield I should get a 10+ db reduction.

The downside is that I'd need some 20 foot step ladders to do this, 
whereas with the ferrites I can just place them at two points (on both 
sides of my property).

I could track down the noise sources in my neighborhood. But there are a 
lot of them, and with a high turnover of renters every year - it'd be an 
endless fight.


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