what is radio? What are its uses?
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3
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The prime purpose of radio is to convey information from one place to another through the intervening media (i.e., air, space, nonconducting materials) without wires. Besides being used for transmitting sound and television signals, radio is used for the transmission of data in coded form.
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1
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the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
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