The remote control device crystal frequency stabilization using pulse amplitude modulation transmitter, A simpler circuit, high frequency stability, launched 28MHZ are continuous carrier amplitude.
该遥控装置采用晶体稳频脉冲调幅发射机，电路较简单，频率稳定度高，发射的是间断的28MHZ等幅载波。
The transmitter circuit consists of a pulse signal generator circuit, band-pass filters, power amplifiers.
发射机电路由脉冲信号产生电路、带通滤波器、功率放大器组成。
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