I recently heard about these myself. They protect from electro magnetic waves.
....if anyone can provide a link on how to construct one of these cages, it would be appreciated.
Thanks
>> if anyone can provide a link on how to construct one of these cages
It’s real easy.
1) Make a completely enclosed box out of ferrous metal. If it has a door, the door should seal to the rest of the box with a conductive gasket.
2) Put your electronical stuff inside. You know: your shortwave radio, your flatpanel teevee, your iPod...
3) The biggest problem is making sure that everyone ELSE puts THEIR stuff (iTunes, the teevee station, all the cellular towers) inside THEIR Faraday cages. Or else YOUR stuff, while still operational, will be pretty much useless.
Here’s some info. In a worst case scenario, an old, even busted microwave will work as a faraday cage. Here’s a few links though, I can find more. Any grounded metal box will work to some degree, from my understanding, just keep whatever is inside insulated.
http://www.unitedstatesaction.com/emp_and_faraday_cages.htm
http://preparednesspro.wordpress.com/2009/06/18/emp-101-part-iv-faraday-cage/
http://www.youtube.com/watch?v=fQ_Z7LGZ1AM
Microwave machine acts as a faraday cage/
Get a microwave. To make sure it doesn’t have leaks, put your cell phone in it and call the number from another phone (make sure the microwave is NOT turned on - it’ll fry your phone). If your cell phone rings while in the microwave, it’s got leaks. Keep trying them until you get one that blocks the cell phone tower...