4 ms·

I once worked on a project trying to isolate WiFi signals. We ended up purchasing a metal box with a conductive gasket, and were able to detect wireless signals

I once worked on a project trying to isolate WiFi signals. We ended up purchasing a metal box with a conductive gasket, and were able to detect wireless signals through the box until we screwed the lid down to spec. Just a point of reference, I've never done EMP work... But I'm not sure how much the copper foil will buy you. Regardless, beautiful build!

willis936 7y ago
An ungrounded Faraday cage is a re-radiator. If it's grounded you need very little material. The most important factor is the largest gap in the cage, which dictates the longest wavelength that is passed. Look at microwave oven meshes to see a size of gap that blocks slightly above 2.45 GHz.
Roark66 7y ago
>But I'm not sure how much the copper foil will buy you. It'll do very little. There is a paper authored by US army talking about various EMP protection measures. The minimum reliable protection there is a 12mm thick (half inch) mild steel container with a lead seal. This is why if there is ever a nuclear war the vacuum tube equipment will be the only stuff that survives.