The Daiwa CNW-518 manual antenna tuner operates on these HF bands: 3.5, 7, 10, 14, 18, 21, 24 and 28 MHz. Meter ranges are 20/200/1000 watts. Capacity is 2.5 kW SSB PEP, CW 1 kW (50% duty cycle), SSTV/RTTY 500 watts (10 minutes), AM 250 watts (10 minutes). Daiwa's famous cross-needle display shows forward and reflected power. Input output is SO-239. 12 VDC required for indicator illumination only. There is an A/B antenna switch and tuner on/bypass switch.