radio
Sign in to savethumb|An antenna farm hosting various [[radio antennas on Sandia Peak near Albuquerque, New Mexico, United States]]
AI overview
Radio is a technology that uses antennas to transmit and receive electromagnetic waves for communication and broadcasting purposes. It matters because it enables wireless transmission of information over distances, making it fundamental to modern communication systems, entertainment, and emergency services.
AI-generated from the Wikipedia summary — may contain errors.
Article
12 sectionsContents
- Etymology
- History
- Principles
- Communication systems
- Bandwidth
- ITU frequency bands
- Regulation
- Applications
- See also
- References
- Further reading
- External links
thumb|An antenna farm hosting various [[radio antennas on Sandia Peak near Albuquerque, New Mexico, United States]]
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves. They can be received by other antennas connected to a radio receiver; this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.