Outline of radio
From Infogalactic: the planetary knowledge core
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.
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Essence of radio
- Main article: Radio
Types of radio
- Amateur radio
- Radio broadcasting
- Radar
- Radio navigation
- Software-defined radio
- Two-way radio (Aviation, Land-based commercial, Government, Marine)
Radio broadcasting segmentation
- College radio
- Commercial radio
- Community radio
- International broadcasting
- Internet radio
- Music radio
- Pirate radio
- Public radio
History of radio
- Main article: History of radio
- Invention of radio
- Wireless telegraphy
- Spark-gap transmitter
- Alexanderson alternator
- Coherer
- Continuous wave
- Crystal radio
- Vacuum tube
- Amplitude modulation
- Old-time radio
- Radioteletype
- Timeline of radio
Radio broadcasting
Radio science
- Antenna (radio)
- Electromagnetic radiation
- Radio frequency
- Radio propagation
- Receiver (radio)
- Transmitter
- Types of radio emissions
Radio stations
- Radio stations in Africa
- Radio stations in Asia
- Radio stations in Australia
- Radio stations in Europe
- Radio stations in North America
- Radio stations in South America
- Radio stations in the South Pacific and Oceania
Persons influential in the field of radio
- Michael Faraday (predictions)
- James Clerk Maxwell (theoretical work)
- Heinrich Rudolf Hertz (experimental demonstrations)
- Edwin Howard Armstrong
- Guglielmo Marconi
- Nicola Tesla
See also
References
- ↑ Dictionary of Electronics By Rudolf F. Graf (1974). Page 467.
