This method is applied to classify and identify the radio communication signals and has acquired good results.

文章将这种方法用于无线电通信信号的分类与识别，取得良好的效果。

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Because the moon's body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot where it could send signals to the spacecraft and to Earth.

由于月球阻碍了与探测器的直接无线电通信，中国首先必须把一颗人造卫星送入月球轨道上的一个点，人造卫星可以从那里向航天器和地球发射信号。

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Electromagnetic waves produced by solar flares may disturb the ionosphere and interfere with radio signals, resulting in degraded communication quality.

太阳耀斑放出的电磁波会引致电离层急剧变化，干扰无线电讯号，大大降低通讯的质素。

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Marconi sent the first radio communication signals through the air in eighteen ninety-five.

VOA: special.2010.01.31

But that first requires the service to find an off-the-shelf radio that can carry the necessary signals to enable unfettered communication between diverse radios and users.

FORBES: Army Resets Radio Plans As Demand Signal Shifts