The JM38510/05504BEA is a bipolar monolithic integrated circuit designed specifically for use in radio communication devices, such as radios and walkie-talkies. This integrated circuit contains multiple features, including an oscillator and reference frequency generator, an audio switch circuit, a power amplifier, and an AGC voltage regulator. The oscillator/reference generator produces two systems of output signals to generate reference signals for the audio switch and control signals for power amplification. The audio switch is comprised of three controls for mute, tone, and priority, allowing the user to adjust these parameters to their desired settings. The power amplifier is regulated by an adjustable gain control voltage from the AGC voltage regulator and delivers an amplified output.