The following outline is provided as an overview of and topical guide to radio:
Radio – transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light.Dictionary of Electronics By Rudolf F. Graf (1974). Page 467. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, phase, or pulse width. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.
Descriptions of radio
Broadcasting Communication Wireless communication Transmitter Radio receiver Radio broadcasting
Applications
Amateur radio Direction finding Radio broadcasting AM broadcasting FM broadcasting Shortwave broadcasting Radar Radio astronomy Radio navigation Radiotelephone Satellite radio Software-defined radio Two-way radio (Aviation, Land-based commercial, Government, Marine) Mission critical communication TETRA and P25 Wireless power transfer
Radio broadcasting
Disc jockey Radio documentary Radio format Radio personality Radio programming Campus radio Commercial radio Community radio International broadcasting Internet radio Music radio Pirate radio Public radio
History of radio
History of radio Invention of radio Wireless telegraphy Spark-gap transmitter Alexanderson alternator Antique radio Coherer Continuous wave Crystal radio Vacuum tube Amplitude modulation Old-time radio Radioteletype Table of years in radio (events by year) Timeline of radio
Radio science
Radio science Antenna (radio) Carrier current Electromagnetic radiation Radio frequency (electricity and electromagnetic waves) Radio spectrum (electromagnetic waves) Radio propagation Receiver (radio) Transmitter Types of radio emissions
Radio technology
Antenna matching unit Batteryless radio Digital radio DTV radio Preselector Radio frequency power amplifier Radio software Shortwave radio receiver Superheterodyne receiver Tuner (radio) TV radio
Radio stations Radio communication station lists of radio stations By continent By country By language
Persons influential in the field of radio Michael Faraday (predictions) James Clerk Maxwell (theoretical work) Heinrich Rudolf Hertz (experimental demonstrations) Oliver Lodge (techniques for transmitting and receiving radio waves) Guglielmo Marconi (adapted radio waves for use in signalling) Reginald Fessenden (developed amplitude modulation (AM) radio and first voice transmission) Edwin Howard Armstrong (developed frequency modulation (FM) )
Alternatives Cable FM Free-space optical communication (FSO) Internet radio
Other Bandstacked
Years in radio
See also
:Category:Radio by country
References
External links