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Radio is a powerful telecommunication technology that uses electromagnetic waves to transmit information—such as sound, data, or video—through the air without the need for wires. It has been a cornerstone of global communication for over a century, evolving from a simple "wireless telegraph" into a diverse medium encompassing broadcasting, navigation, and mobile connectivity. The range of all possible radio frequencies. Governments manage this spectrum to ensure that airplane pilots, emergency services, and music stations don't interfere with one another.