(n.) Electromagnetic waves in the bandwidth between the frequencies of audio and light, from about 500 kHz to 300 GHz. These waves are propagated in the air without a guide wire or a cable.
radio frequency [RF]
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(n.) Electromagnetic waves in the bandwidth between the frequencies of audio and light, from about 500 kHz to 300 GHz. These waves are propagated in the air without a guide wire or a cable.