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.[1] 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.
Essence of radio
Applications
- Amateur radio
- Direction finding
- Radio broadcasting
- Radar
- Radio astronomy
- Radio navigation
- Radiotelephone
- Software-defined radio
- Two-way radio (Aviation, Land-based commercial, Government, Marine)
- Wireless power transfer
Types of radio broadcasting
Radio broadcasting topics
History of radio
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
Radio stations
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
Other
- Bandstacked
- List of radios – List of specific models of radios
- Years in radio
See also
- Category:Radio by country
References
- ↑ Dictionary of Electronics By Rudolf F. Graf (1974). Page 467.
External links
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