Does anyone know of a device that can block a radio signal in close proximity (5-10 yards)?
We know a young college girl who's in a bedsit next to a deaf old man. He's been asked to turn his radio volume down or wear headphones. He is obnoxious and rude and denies he is making any noise. He is old, and in the past has had a stroke so I cant go round and sort him. A device that works like a mobile phone blocker, but for radio waves would be great. It could be turned on when he has his radio on and turned off at all other times.
I don't really know what to look for, any idea's?