Bodypack transmitter for UHF-E receivers with an included lavalier microphone. The device operates in the UHF 518–548 MHz frequency band and uses a fixed carrier frequency of 527.5 MHz. It provides a cardioid condenser capsule, adjustable sensitivity, FM modulation, 10 mW RF output power, and an operating range of up to 60 m with line-of-sight. Power is supplied by two AA batteries via a 3 V DC connection.