MFJ-939K Plug & Play 200W 1.8-30MHz HF Autotuner for Select Kenwood HAM Radios Automatically matches antennas from 6 to 1,600 ohms impedance (SWR up to 32:1) Handles 200 watts SSB/CW Eight memory banks with over 2,500 memories per bank 1.8 to 30 MHz continuous frequency coverage Requires 13.8 V DC (11.5-15 V) at 750 mA