Sennheiser EW 312 G3-G-US omni-directional EW system 42 MHz bandwidth: 1680 tunable UHF frequencies for interference-free reception Enhanced frequency bank system with up to 24 compatible frequencies Ethernet port for connecting to the Wireless Systems Manager (WSM) software for control via computer - this delivers a good overview of monitoring and professional data management for multi-channel systems Integrated Equalizer and Soundcheck mode Pilot tone squelch for eliminating RF interference when transmitter is turned off