LDG Electronics AT-897PLUS Automatic Antenna Tuner 1.8-54 MHz, 0.1-100 Watts, Bolt-On FT-897 Auto Memory Tuner, 200 Memory, 2 Year Warranty Microprocessor controlled - 2000 fast memories arranged by frequency - Switched L tuning network - Mounts on the side of the Yaesu FT-897 with four M3-0.5x10 screws (included) Continuous coverage 1.8 to 54 MHz - Power rating HF: 0.1 to 100 Watts, 30W on PSK - Latching Relays - CAT control at 4800 baud with extra CAT Port Tuning time: 1 to 7 seconds, 4 average - Antenna impedance: 6 to 800 Ohms (Approximately up to 10:1 SWR, 3:1 on 6M) - Tunes nearly any coax fed antenna. Use optional Balun for long wires. Power requirements: 11 to 14 volts DC @ 300 milliamps during tune - Operating voltage supplied via the CAT Port (cable supplied with tuner) Enclosure sizes: 11.5D x 3.25H x 1.5W (measured in inches) - Weight: 2 pounds