红外线自动对频方式，更方便准确的找到相应频率。
Infrared automatic frequency, more convenient and accurate finds the corresponding frequencies.
本文对移频自动闭塞发送设备信息源电路的频率安全性及稳定性进行了分析，并总结出最佳设计方案。
The article analyses the frequency security & stability of signal generator circuit of dispatching equipment of automatic block with frequency shift, and an optimum design scheme is concluded.
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