基于FM芯片RDA5820的51单片机的FM收音机，改芯片具有收发功能，通过IIC协议控制芯片实现调台、调音量、发射功能。-Based on FM 51 MCU chip RDA5820 FM radio, change the chip to send and receive function, through the IIC protocol control chip tuning tuning, quantity, launch function.