Cowboy Roy - New Old Stock Noise Toy. Works on key up. Easy Installation. Works on AM, SSB and FM. Can be wired to all microphones including older D-104, Turner +2 and Turner +3 Microphones.Enhance your vintage Browning Golden Eagle, Tram D201A or modern Cobra, Galaxy or export radio.Completable and tested with Linear amplifiers such as D A, Texas Star, Fat Boy, X Force, RM Italy...Have the sound that is remembered. Bid with confidence, 100% Positive feedback for over 13+ Years.