Posted by Karl on
URL: https://www.es-forum.com/Internet-via-satellite-tp4035329p4035388.html

Kara, are you in an apartment? And what type of meter are you using?  It's unavoidable that there will be some low frequency magnetic fields near the outlets, because all household wiring uses alternating current that switches back and forth 60 times per second. There's really no way to get rid of it short of switching your wiring to DC and buying all new appliances (or at least new power supplies), or opening up the walls and putting all of the cables into thick steel pipes).

If your meter is detecting intermediate frequencies (it might say "200 Hz" or "200 KHz"), that's also pretty hard to fix. I've tried to clean up the "dirty power" (what engineers call "harmonics") in a shared house with neighbors who sometimes cooperate, and it makes me feel like Captain Ahab.  (Store-bought filters didn't work at all, and it wasn't even possible to buy all of the parts needed to make working filters myself.)

On the other hand, low frequency electric fields (E-fields) are easy to fix once you know where they are. And WiFi, cellular or radio can be blocked with metal shielding.