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移动无线电台的现状在移动无线通信中,有各种不同的系统,其无线端机也有各种不同的形式。从使用角度来看,有车载式和便携式。因此,适应不同的应用,其电台的形状、大小和构造等也不相同。按功能可分为按键通话方式、双工通话方式、多信道存贮方式以及无线呼叫接收机等形式。其中,按键通话方式主要适用于出租汽车、警察等无线系统;双工通话方式主要适用于汽车移动通信和船舶无线电话系统;最近,能有效利用频率的多信道存贮方式终端机剧增,
The status quo of mobile radios In mobile wireless communications, there are a variety of different systems, and wireless end machines are available in a variety of different forms. From the use of point of view, there are car and portable. Therefore, to adapt to different applications, the radio’s shape, size and structure are not the same. According to the function can be divided into key call mode, duplex mode, multi-channel storage and wireless call receiver and other forms. Among them, the push-to-talk method is mainly suitable for taxi, police and other wireless systems; duplex talk mode is mainly applied to mobile communications and shipboard radiotelephone systems; recently, the effective use of frequency multi-channel storage terminal increase dramatically,