ghost box
n.— «I know it sounds crazy, and I know the ghost box is radio based and all sorts of sounds can come through, so it’s only logical to say that people are making words and sentences out of bits and pieces of radio transmission. I thought that too. In truth, from the bottom of my heart, with all great sincerity, ghost boxes do work. It’s like the white noise principle. The radio is set to constantly scan and verifiable communication has come through as well as swearing which is not allowed on radio broadcasts. (There are people doing RTSC research without ghost boxes using running water, fans, and other background noise to capture messages from the other side.)» —“Ghost Boxes…Fact Or Fiction?” by Annette Munnich The Paranormal Python Dec. 21, 2008. (source: Double-Tongued Dictionary)