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* {{Flagicon|Poland}} [[Polish Radio External Service]]: Excerpt from ''Prząśniczka'' by [[Stanisław Moniuszko]], played on piano.<ref>https://www.youtube.com/watch?v=ztH0_2ueIYc</ref>
* {{Flagicon|Poland}} [[Polish Radio External Service]]: Excerpt from ''Prząśniczka'' by [[Stanisław Moniuszko]], played on piano.<ref>https://www.youtube.com/watch?v=ztH0_2ueIYc</ref>
* {{Flagicon|Republic of Ireland}} [[RTÉ Radio 1]]: Chime version of ''O'Donnell Abú'' ("O'Donnell Forever").<ref>[http://www.rte.ie/archives/exhibitions/681-history-of-rte/683-rte-1930s/290086-odonnell-abu-becomes-2rn-station-identification-signal-1936/]</ref>
* {{Flagicon|Republic of Ireland}} [[RTÉ Radio 1]]: Chime version of ''O'Donnell Abú'' ("O'Donnell Forever").<ref>[http://www.rte.ie/archives/exhibitions/681-history-of-rte/683-rte-1930s/290086-odonnell-abu-becomes-2rn-station-identification-signal-1936/]</ref>
* {{Flagicon|Romania}} [[Radio Romania International]]: ''Pui de lei''.
* {{Flagicon|Romania}} [[Radio Romania International]]: ''Pui de lei''by Ionel G. Brǎtianu
* {{Flagicon|Slovenia}} [[RTV Slovenija|Radio Slovenia]]: Electronically generated [[cuckoo]] chirping.
* {{Flagicon|Slovenia}} [[RTV Slovenija|Radio Slovenia]]: Electronically generated [[cuckoo]] chirping.
* {{Flagicon|Sweden}} [[Radio Sweden]]: Chime version of ''Ut i vida världen'' ("Out in the Wide World"), composed by [[Ralph Lundsten]].<ref>[http://www.andromeda.se/ Radio Sweden interval signal] Retrieved 2011-11-24.</ref>
* {{Flagicon|Sweden}} [[Radio Sweden]]: Chime version of ''Ut i vida världen'' ("Out in the Wide World"), composed by [[Ralph Lundsten]].<ref>[http://www.andromeda.se/ Radio Sweden interval signal] Retrieved 2011-11-24.</ref>

Revision as of 13:31, 13 January 2018

The interval signal of Voice of Turkey in 2013.

An interval signal, or tuning signal, is a characteristic sound or musical phrase used in international broadcasting, numbers stations, and by some domestic broadcasters, played before commencement or during breaks in transmission, but most commonly between programmes in different languages. It serves several purposes:

  • It assists a listener to tune his or her radio to the correct frequency of the station. This is because most older and cheaper radio receivers do not have digital frequency readout.
  • It informs other stations that the frequency is in use.
  • It serves as a station identifier even if the language used in the subsequent broadcast is not one the listener understands.

The practice began in Europe in the 1920s and 1930s and was carried over into shortwave broadcasts. The use of interval signals has declined with the advent of digital tuning systems, but has not vanished. Interval signals were not required on commercial channels in the USA, where jingles were used as identification.

Broadcasting services and interval signals

Formerly used

Numbers stations interval signals

Numbers stations are often named after their interval signals, such as The Lincolnshire Poacher or Magnetic Fields after "Magnetic Fields Part 1" by Jean-Michel Jarre.

References

Frost, Jens Mathiesen (1974). World Radio-TV Handbook 1974. London: Billboard Publications. p. 408. ISBN 0823058980.

Sennitt, Andrew G.; David Bobbitt (December 2005). World Radio and Television Handbook 2006. Billboard Books. p. 608. ISBN 0-8230-7798-5.

Sennitt, Andrew G. World Radio and Television Handbook 1997. Billboard Books. p. 560. ISBN 0-8230-7797-7.