Are you here ref'ing a Faraday Cage? Being an EQ sensitive, it has been suggested over many years that I try and build one which might be at least semi-portable...Sounds like I would need a machine shop which I have not.....My problems caused by various waves and/or waveforms is measurable with a small 10 cent device (ie toroid coil and wire) and meter which anyone can build. I am almost certain a cage would eliminate my symptoms and maybe life would be better...Then I would fill like the infamous "bubble-boy":-)
Bob