LDG Electronics Z-100PLUS Automatic Antenna Tuner 1.8-54 MHz, 0.1-125 Watts, 2 Year Warranty RF Power: 0.1 to 125 watts SSB and CW, 30W on PSK. - Latching relays for ultra low power consumption 2000 memories sorted by frequency. - Tunes 6 to 800 ohms. (16 to 150 on 6M) 1.8 to 54 MHz coverage (continuous coverage for MARS) SO-239 in and out connections for dipoles, verticals, beams, G5RV, OCF, Cobra, ect. 7 to 18 Volts DC, 100 mA. 6 foot DC power cable included. - Dimensions: 5.5L, 5.5W, 1.5H. Weight: 16 ounces