【摘要】 作者对地震遥测传输系统中收讯群放和鉴频器进行了改进，选用现代集成电路和现代技术，设计出了群放、鉴频、锁笔、滤波和限幅电路为一体的实用电路，在本文中介绍了该电路设计指标和工作过程，以供技术人员参考和交流更多还原

【Abstract】 The writer improved the receiver and group amplifier and frequency discriminator of seismic telemetry system and by using the modern integrated circuit and technique designed a practical circuit which includes group amplifier,frequency discriminator,wave filter,pen lockout and clipping circuits.In this paper,the design indexes and operating program of the circuit are introduced to provide reference and exchange for the technical personnel.更多还原