列车无线通信多年来一直是铁路通信中的盲区。为解决这一问题,满足铁路运输生产的需要,我们已在研制旅客列车移动通信系统。该系统属于单工无线电话系统,不与市话网接续,而构成自己的专用无线通信系统。一、系统组成特点 1.工作频段为150MHz,频度范围为150—153MHz,信道数为10个,其中控制信道1个,话务信道8个,紧急呼叫信道为1个,信道间为25KHz。 2.采用数字信令系统。该系统的拨号、呼叫以及网内接续等均采用数字式信令格 Train wireless communication has been a blind spot in railway communications for many years. In order to solve this problem and meet the needs of railway transportation production, we have been developing a passenger train mobile communication system. The system is simplex wireless telephone system, not connected with the local telephone network, and constitute their own dedicated wireless communication system. First, the system features a working frequency of 150MHz, the frequency range of 150-153MHz, the number of channels 10, including a control channel, traffic channel 8, emergency call channel 1, channel 25KHz. 2. Using digital signaling system. The system’s dial-up, call and network connection and so on are using digital signaling box