多数无线电技术使用模拟信号，而现代无线远程通讯使用数字传输。
While most radio technologies have used analog signals, modern wireless telecommunications are using digital transmissions.
第一代技术，或1G，是模拟信号，只能传输语音通话。
The first generation, or 1g, technology was analog and transmitted voice calls only.
第一代技术，或1G，是模拟信号，只能传输语音通话。
The first generation, or 1g, technology was analog and transmitted voice calls only.
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