Chord SU20 Beltpack UHF Mics 863.4+864.3 171.917UK Dual UHF wireless microphone system with a compact receiver, supplied with hardware for mounting 1 or 2 units into a 1U 19" rack space. BNC cables and detachable antennas are provided for rear or front mounting as required. Each transmitter is powered by 2 x AA batteries and the beltpack version is supplied with both neckband and lavalier microphones. Output is provided individually on balanced XLR connectors or mixed to a single 6.3mm jack socket. Providing all the functionality of a dual UHF system in a compact half-rack format. Up to 2 sets (4 microphones) can be used together Available in handheld or beltpack versions with 2 carrier frequency options Front or rear mountable antennas Compact half-rack receiver Supplied with power adaptor and 4 x AA batteries Power supply14Vdc 350mA (adaptor supplied) Antenna connectionBNC Batteries4 x AA (2 per transmitter) included Range: 60m Microphone polar pattern Cardioid (handheld, neckband or lavalier) Output connections: 2 x balanced XLR, 1 x unbalanced 6.3mm jack Output impedance: 2.2k Ohms Output level: 400mV (balanced), 200mV (unbalanced) Frequency response: 50Hz - 18kHz (±3dB) S/N ratio: >80dB THD: <0.5% @ 1kHz Dimensions receiver: 203 x 187 x 42mm Weight  receiver: 845g Dimensions : handheld transmitter 250 x 47mmØWeight : handheld transmitter 231g (no battery)Carrier frequencies: 863.42MHz (Red) + 864.3MHz (Green)