Just occurred to me that the humble microwave should be a fairly effective Faraday cage, certainly for the microwave spectrum, anyone know how good it is for the relevant communication frequencies?
Just occurred to me that the humble microwave should be a fairly effective Faraday cage, certainly for the microwave spectrum, anyone know how good it is for the relevant communication frequencies?
Many microwaves suck as faraday cages, because they are made to be an effective cage only for a very specific frequency (the one the microwave runs at). Unfortunately, mobile radio frequencies are all over the place, for historic, technical, competition etc. reasons. So it is not a good Faraday cage, unless you want to only block out a specific radio (usually, 2.4 GHz Wifi and Bluetooth should be blocked).
You can build a good, vhf to multi-gigahertz frequencies cage by using a metal box and covering all the gaps, cracks etc. in tinfoil or copper tape. Bonus points for grounding. I made a decent one (for some unrelated radio experiments) out of a metal box and a tin foil seal, -60 dB at 2.4 GHz and no reason why it wouldn’t work at other frequencies.
Will it keep the brain control waves out too?
Only when it’s on.
I guess we need to try. Any volunteers?
Remember, the door must be fully closed :)