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在由多基站组成的无线同播寻呼网中，相关发信机的信号发射到重叠区时存在时延差，而当时延差较大时就容易在重叠区产生误码、丢码现象。针对无线同播寻呼时延均衡的要求，设计了以ＡＴ８９Ｃ５１单片机为核心的寻呼发信时延器。文中介绍了发信时延器的硬件与软件设计。该时延器在寻呼网上的实际运行表明：各项性能指标达到了预定要求。
In a radio simulcast paging network composed of multiple base stations, there is a time delay difference when the signal of the relevant transmitter is transmitted to the overlapped area, and errors and lost codes are easily generated in the overlapped area when the delay is relatively large. Aiming at the requirements of wireless simulcast paging delay equalization, a paging transmit delay with AT89C51 singlechip is designed. This paper introduces the design of the hardware and software of sending delay. The actual operation of the time delay device in the paging network shows that the performance indicators meet the predetermined requirements.