Special Features:

Power output 40w at less than 10 pct continuous, 55w with siren generator; power consumption full 4.4 amps, quiescent 0.42 amps; inputs / mic low impedence, 2 aux high level; sensitivity mic 1mv, aux 0.4v; controls: 1 mic; 1 aux volume; 1 selector sitch/power (4 position); power off, mic, radio, aux

Properties:

An electronic device whose audio frequency input signals control power from a source independant of the input signal and delivers audio frequency output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It operates at frequencies of 20 kilohertzs and below. It may or may not have signal switching capabilities.