The Galena Century Radio (GCR) J-Walker Loose Coupler Crystal Radio AW is a fully functional Loose Coupler Radio. The Radio has three 10 Point Rotary Switches that connect to 20 Taps on the Primary Coil and 10 Taps on the Secondary Coil. The Secondary Coil slides on Brass Rails for full motion in relation to the Primary Coil. Brass Binding Posts are used as the contact points for the Phones, Aerial, Earth, and Germanium Diode. A specially designed Brass Crystal Detector provides a reliable and attractive contact point between the Cat’s Whisker and Galena Crystal. The J-Walker does not require a battery, generator, or household power source. The J-Walker Radio comes fully assembled and requires only the connection of an antenna and a ground to begin operation. The J-Walker is enclosed in an American Walnut box that measures 9 3/4″W x 7 3/4″D x 8 3/4″H.