In the US, is it legal to jam radio/cell communications if such jamming is entirely confined to your own private property? And does it matter whether you are in a building or not?
Imagine now that you have constructed a Faraday cage on your property so that external radio/cell signals cannot enter and internal radio/cell signals cannot exit. If you are inside the Faraday cage, is it legal or illegal to operate a radio/cell jammer?
These questions are intended to ask about the legality of a private citizen doing this without knowledge or approval by any governmental authority. If the jurisdiction typically matters let's say New York, New York, USA.