This is a used product retested to original factory specifications but may have cosmetic defects. Turn your older vehicles AM/FM radio into a World Band Receiver at the push of a button. Covers entire 19, 25, 31, and 49 Meter International shortwave broadcast bands. Hear stations all over the world! Just plug your car radio antenna into the MFJ-306 and insert the MFJ-306 cable into your radio antenna jack and connect 12 VDC.