150MHz 单双工兼容制列车调度通信系统设备中选用的是 SH501KS 型袖珍式无线电话机。本机采用了先进的 PLL 技术(锁相频率合成器)和集成电路、晶体管和超小型元器件。故体积小、重量轻,可将本机装入上衣口袋中使用,也可肩背或穿在腰带上使用。当本机接上 ZP116专用外接送受话器,可作铁路无线通信用的车长电台,用以呼叫车站 150MHz single and duplex compatible train scheduling communication system equipment is selected SH501KS type pocket radiotelephone. The machine uses advanced PLL technology (PLL frequency synthesizer) and integrated circuits, transistors and ultra-small components. Therefore, small size, light weight, the machine can be loaded into the pocket pocket, can also be worn on the shoulder or worn on the belt. When the machine connected to the ZP116 dedicated external receiver, can be used for rail wireless communications car radio stations used to call the station