Product Detail Sturdy metal housing (transmitter and receiver) 42 MHz bandwidth: 1680 tunable UHF frequencies for interference-free reception Enhanced frequency bank system with up to 12 compatible frequencies Adaptive-diversity reception for high reception quality Pilot tone squelch for eliminating RF interference when transmitter is turned off . The "Sennheiser EW112PG3A Wireless Kit with EK 100 G3 Diversity Receiver Frequency Band A Range: 516-558 MHZ" is best product for you. We recommended Sennheiser EW112PG3A Wireless Kit with EK 100 G3 Diversity Receiver Frequency Band A Range: 516-558 MHZ