说明：  UAA3220,高度集成的单芯片接收器，主要用于VHF和UHF 系统中，支持ASK 和FSK 解调技术，内置混频器，振荡器，倍频单元，ASK/FSK 开关，FM 解调器，数字滤波器；置于车身的高频接收芯片
(Uaa3220, highly integrated single-chip receiver, mainly used in VHF and UHF systems, supporting ask and FSK demodulation technology, built-in mixer, oscillator, octave unit, ask / FSK switch, FM demodulator, digital filter; high frequency receiver chip placed in the body)