ATW-2120C (UA) Handheld Mic System T220c Capsule 606-613 MHz CH38ATW R2100c receiver and ATW T220c handheld cardioid dynamic microphone transmitter. The ATW R2100c receiver features true diversity reception. Two antennas feed two completely independent RF sections on the same frequency; automatic logic circuitry continuously compares and selects the superior received signal, providing better sound quality and reducing the possibility of interference and dropouts. The receiver also offers a switchable output