Radio

（重定向自Radio communication system）

The Alexandra Palace, here: mast of the broadcasting station

Radio communication. Information such as sound is converted by a transducer such as a microphone to an electrical signal, which modulates a radio wave sent from a transmitter. A receiver intercepts the radio wave and extracts the information-bearing electronic signal, which is converted back using another transducer such as a speaker.

An audio signal (top) may be carried by an AM or FM radio wave.

Radio is the use of radio waves to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

单词	Radio communication system
释义	Radio communication system 原声例句旅行到地球内部 And talking to them on an underground, underwater radio communications system. 并借助于水下无线电通讯系统与他们联系。英语百科 Radio （重定向自Radio communication system） Radio is the use of radio waves to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.
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