The PT 4500 from AKG is a professional-quality wireless bodypack transmitter that can be used as part of a WMS 4500 wireless system. The transmitter operates on a 30MHz UHF band and has up to 1200 selectable frequencies with several preset frequency banks for quick matching to a receiver. The transmitter has an RF output power of up to 50mW for maximum resistance to interference and dropouts. It has a backlit display and a pilot tone system that sends transmitter status data to a receiver, including mute switch position and remaining battery life. The unit can operate for up to 15 hours on standard AA batteries, or up to 12 hours on the optional BP 4000 battery pack. The BP 4000 has an integrated Smart battery Management System, and the transmitter has charging contacts for easy recharging on an optional charger.
