Radio Broadcasting as Ict
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Long wave radio broadcasting station, Motala, Sweden
Broadcasting tower in Trondheim, Norway
Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both. Audio broadcasting also can be done via cable radio, local wire television networks, satellite radio, and internet radio via streaming media on the Internet.
The signal types can be either analog audio or digital audio. Contents * 1 History * 2 Types * 2.1 Shortwave * 2.2 AM * 2.3 FM * 2.4 Pirate radio * 2.5 Terrestrial digital radio * 2.6 Satellite * 3 Program formats * 4 See also * 5 References * 6 Further reading * 7 External links |
History
Main article: History of radio
The earliest radio stations were simply radiotelegraphy systems and did not carry audio. The first claimed audio transmission that could be termed a broadcast occurred on Christmas Eve in 1906, and was made by Reginald Fessenden. Whether this broadcast actually took place is disputed.[1] While many early experimenters attempted to create systems similar to radiotelephone devices by which only two parties were meant to communicate, there were others who intended to transmit to larger audiences. Charles Herrold started broadcasting in California in 1909 and was carrying audio by the next year. (Herrold 's station eventually became KCBS).
For the next decade, radio tinkerers had to build their own radio receivers. In The Hague, the Netherlands, PCGG started broadcasting on November 6, 1919. In 1916, Frank Conrad, an employee for the Westinghouse Electric Corporation, began broadcasting from his
Long wave radio broadcasting station, Motala, Sweden
Broadcasting tower in Trondheim, Norway
Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both. Audio broadcasting also can be done via cable radio, local wire television networks, satellite radio, and internet radio via streaming media on the Internet.
The signal types can be either analog audio or digital audio. Contents * 1 History * 2 Types * 2.1 Shortwave * 2.2 AM * 2.3 FM * 2.4 Pirate radio * 2.5 Terrestrial digital radio * 2.6 Satellite * 3 Program formats * 4 See also * 5 References * 6 Further reading * 7 External links |
History
Main article: History of radio
The earliest radio stations were simply radiotelegraphy systems and did not carry audio. The first claimed audio transmission that could be termed a broadcast occurred on Christmas Eve in 1906, and was made by Reginald Fessenden. Whether this broadcast actually took place is disputed.[1] While many early experimenters attempted to create systems similar to radiotelephone devices by which only two parties were meant to communicate, there were others who intended to transmit to larger audiences. Charles Herrold started broadcasting in California in 1909 and was carrying audio by the next year. (Herrold 's station eventually became KCBS).
For the next decade, radio tinkerers had to build their own radio receivers. In The Hague, the Netherlands, PCGG started broadcasting on November 6, 1919. In 1916, Frank Conrad, an employee for the Westinghouse Electric Corporation, began broadcasting from his
References: Terrestrial digital radio Digital radio broadcasting has emerged, first in Europe (the UK in 1995 and Germany in 1999), and later in the United States, France, the Netherlands, South Africa and many other countries worldwide