Audio-Technica ATW-R2100a 2000 Series Diversity Receiver Channel D High sensitivity dual IF receiving design for dropout-free performance Automatic frequency scanning finds open channel High efficiency compander for flawless audio 10 compatible user-switchable channels in one of two UHF frequency ranges Antenna power available for powered antennas & other in-line RF devices Receiver internal function menu with soft-touch controls Straightforward channel selection process Digital Tone Lock squelch Adjustable receiver squel Automatic frequency scanning finds open channel High efficiency compander for flawless audio 1 compatible user-switchable channels in one of two UHF frequency ranges Antenna power available for powered antennas & other in-line RF devices