DX-390 (200-0214) Connecting an External Antenna Faxback Doc. # 3612 To improve SW reception, connect an external antenna. PORTABLE ANTENNA You can connect a portable external antenna directly to the telescoping antenna. We recommend Cat. No. 278-1374. ANTENNA KIT You can make an antenna using a shortwave antenna kit, such as Cat. No. 278-758. This requires a two-conductor 1/8-inch plug, such as Cat. No. 274-288. Follow these steps to connect the receiver to the antenna. 1. Connect a lead-in wire to the antenna. 2. Unscrew the cover from the 1/8-inch plug. 3. Thread the lead-in wire through the plug's cover. Then, solder the wire to the terminal that leads to the plug's tip. 4. A ground wire might provide additional improvement in reception. If you want to use a ground wire, thread a ground wire through the plug's cover, and connect it to the plug's ground terminal. Then, connect the ground wire to an earth ground, such as a metal cold water pipe. 5. Replace the plug's cover. 6. Insert the plug's cover. 6. Insert the plug into the receiver's AM EXT ANT jack. (ALL-12/13/94)