Control UnitThe microprocessor based TC-RFZ04 control unit is able to transmit4audio channels, featuringindependent channel level control, independent channellevel indicators, and independent channeloutputs for sound recording. Via a DB25 cable, multiple interpreter consoles can be connected to the control unit in a daisy-chain. Multiple control units can be cascaded together to form a system for16audio channels.RF modulation: DSSS technology Frequency band: 24002500 MHz Frequency spacing: 5 MHz Frequency response: 20Hz-20kHz Channel separation: >70dB RF output power level: 700mV RF output impedance: 50 ohms Input impedance: 18k ohms Signal-to-noise ratio: >75dBTransmit power: 20mW 700mW Power consumption: 60W Power supply: 110/240VAC, 50-60Hz Expansion port: DB25 connector RF outputs:4 N-connectors Audio inputs:4RCA unbalanced Audio outputs:4RCA unbalanced Interpreter connector: DB25 female Dimensions: 430×99×325 mm RF Antenna Unit TC-RFF02S/04S antenna unit, designed to be used for 2 or 4 operating channels, is suitable for indoor use. Equipped with channel selection and channel locking function, the unit is powered by the control unit via a coaxial feed cable. The antenna unit can be installed on wall or tripod stand. Signal Type: DSSS Frequency range: 2400- 2500 MHz Frequency spacing: 5 MHz Gain: 3dBi