Cost-effective EMP-Proof Faraday Cages

January 4, 2014

Cost-effective EMP-Proof Faraday Cages
 

1. Use silver, copper, or stainless steel as your shielding material – minimum 80 openings per inch with a mesh material or higher. Better yet, a solid sheet.

 

2. Stainless steel garbage cans are an effective method of shielding. Insert steel wool between the lid and the can to seal the gaps.

 

3. Metal boxes can work. Even aluminum foil works – at a lower effectiveness. But if your devices are off they *should* be fine.

 

4. If you need EMP shielding in a hurry, simply tape aluminum foil around an object you want protected, making sure the aluminum fully covers the object.

5. The main problem is ensuring that there are no holes or gaps in the material – very difficult normally, and even harder to do with aluminum foil.

6. Hole size (if the material is not a sheet, the smaller the holes the better) is much more important than material thickness.

 

7. Contrary to some of what has been written, checking cell phone reception inside the Faraday cage is a good indicator of shielding effectiveness. If you can’t call inside, your electronics are probably protected.

 

8. There are only 3 more “upscale” solutions – 1) our transparent shields (sales pitch here) that go around your electronics and let you type on any button-operated devices, 2) EMP-shielded rooms, or 3) EMP-hardened military grade electronics. The major issue here is cost.

9. Insulating devices inside a Faraday cage from the surface is not necessary IF the shield is properly constructed.

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