posted on Apr, 12 2013 @ 11:37 AM
All this works with Tin Foil...
and if you can get big boxess that go in side each other.
you will have the Best cheap one.
I put tin foil around the box they came in.
and put them in a big box with a double lear.
dont let the foil touch each other.
wrap in papure or cling film.
SEE tin Foil hats work!
Originally posted by Hellhound604
btw, a very simple test to test the efficiency of your Faraday cage is to put your cellphone inside, and see if you get a signal (or try to phone it).
if you do, sorry, not good enough. Next, put your FM radio on a very strong station, and put it inside your Faraday cage. If it still receives the
signal, not good enough. Then put your radio on a very strong SW station, and repeat the procedure, and then on a strong AM station. To test the cage
at 2.4HGz, put your laptop inside and see if you can still pick up your Wi-Fi access point. If you have a level meter on your radio, you should be
able to get an indication of the isolation of your Faraday cage at that frequency. If you have a smartphone, or know the bluetooth commands for your
cellphone, you should be able to interrogate its field strength meter too, the same for your wifi module.
If your cage passes these tests with flying colors, congratulations, you have a Faraday cage that works from MW to microwaves (2.4HGz). It just might
protect your stuff from the RF part of the EMP. If it doesn't, well, back to the design board.