接收平台下发的带副载波的调频信号，并进行解调、放大，最后驱动高音喇叭进行广播。支持接收三个频点FM-RDS，支持应急/日常广播，支持区域广播，支持定时广播，具有多种保护电路等。(The subcarrier frequency modulation signal under the receiving platform is demodulated and amplified, and the loudspeaker is finally driven to broadcast. It supports receiving three frequency points FM-RDS, supporting emergency / day-to-day broadcasting, supporting regional broadcasting, supporting timing broadcasting, and having a variety of protection circuits.)