Outline of radio

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.

Contents 1 Essence of radio 2 Types of radio 2.1 Radio broadcasting segmentation 3 History of radio 4 General radio concepts 4.1 Broadcasting concepts 4.2 Technical concepts 5 Radio stations 6 Persons influential in the field of radio 7 See also 8 References 9 External links

Essence of radio

Main article: Radio

• Broadcasting
• Wireless
• Radio broadcasting

Types of radio

• Amateur radio
• Radio broadcasting
  • AM broadcasting
  • FM broadcasting
  • Shortwave 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

General radio concepts

Broadcasting concepts

• Disc jockey
• Radio format
• Radio personality
• Radio programming

Technical concepts

• 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

• Edwin Howard Armstrong
• Guglielmo Marconi
• Nicola Tesla

See also

• Category:Radio by country

References

External links

• Radio Station Zone
• FMLIST worldwide database of FM stations
• FMSCAN worldwide reception prediction
• MWLIST worldwide database of MW and LW stations
• MWSCAN worldwide MW and SW reception prediction

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