A Faraday cage is a container that can block EMF frequencies. The construction of the cage will determine how many different EMF frequencies the cage will be able to block. Faraday cages work by generating an external static electrical field which causes the electric charges within the cage’s conducting material to be distributed such that they cancel the field’s effect in the cage’s interior. PIM’s cages are designed to specifically block out FM, and some AM, radio frequencies from interfering with their audio recorders, thus creating false EVPs. A video showing our Faraday Cages working to block FM radio signals is below.
