Comprehensive characteristics S channel number: 128 ╳ 2 = 256 CH S frequency range: A: 750 + 10 MHz B: 810.2 + / - 10 MHz S channel interval: 0.5 MHz S bandwidth: < 200 KHZ S frequency response: 50-20000 Hz S dynamic range: > 100 db S T.H.D. : < 0.5% S S/N: > 80 db S effective distance: 100 m Transmitter: S transmission power: 20 mw S oscillation mode: PLL S modulation mode: FM S image reject: > 50 db S modulation frequency deviation: 75 KHZ or less S channel conversion method: coding switch, infrared receiver of the frequency signal. S: voltage DC2.4-3 V (2 AA DC 1.2 V or 1.5 V battery) receiver S sensitivity: 2.0 uV S oscillation mode: PLL S SNR: > 90 db S distortion: < 0.5% S channel conversion method: coding of FM, infrared emission of the frequency signal S output: two equilibrium output; A 6.35 mix output S: output voltage balance of 0-500 mv, mixed 0-300 mv (30 KHZ modulation) S output voltage control: potentiometer knob. S power: AC200-230 - v; DC15V; S size: 420 * 200 * 45 is equipped with standard 19 inch rack mounts