DX-392 (200-0219) Hints and Tips Faxback Doc. # 19819 The AM Antenna is built-in. However an external antenna can be used if the stations are not strong. For AM reception, use a loop antenna. To use a Long-wire Antenna Kit (Cat. No. 278-0758) with this radio, you must purchase 1/8" connectors (Cat. No. 274-0286 or 274-0287). The screw connectors on the end of the antenna wire need to be removed and the wire attached to the 1/8" connector which can then be plugged into the external AM antenna jack on the radio. (/ir-05/03/96)