The Electro-Voice RE3-BPKRSB-5H is a UHF wireless bodypack system configured for use with a reference switch, making it suitable for applications that require convenient control of microphone muting and cueing, such as conferences, broadcast productions, and panel discussions. It features a rugged metal RE3-BPT bodypack transmitter and an RE3-RX diversity receiver for dependable wireless signal reception. The receiver uses diversity technology to help minimize signal dropouts, while ultrasonic sync allows quick transmitter-to-receiver frequency synchronization. Operating in the 560–596 MHz frequency band, the system provides a 36 MHz tuning bandwidth with selectable frequencies in 25 kHz steps. The metal transmitter operates on two AA batteries or rechargeable NiMH batteries.