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File:BBBC.PNG
Historical interval signal of the BBC
File:RAVAG-Pausenzeichen.ogg
RAVAG interval signal, clock ticking 270/min (9 in 2 sec)

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 programs in different languages.

It serves several purposes:

  • It helps a listener using a radio with an analog tuner to find the correct frequency.
  • 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 United States, where jingles were used as identification.

List of interval signals by stationEdit

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  • "Kazoe-uta" ({{#invoke:Lang|lang}}, counting-out game).
  • "Sakura Sakura" ({{#invoke:Lang|lang}}, cherry blossoms).

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  • Radio Mayak: Vibraphone version of Moscow Nights.
  • Radio Sakha: Excerpt from a Yakut folk song.
  • English programme: "Bow Bells".
  • Non-English programme, non-Europe: "Lillibullero", three notes tuned B–B–C.
  • Non-English programme, to Europe: four notes tuned B–B–B–E.

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File:Voa english signing on with yankee doodle.ogg
Interval signal for Voice of America

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Formerly usedEdit

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  • Trumpet version of Kupředu levá ("Forward, Left") by Jan Seidl

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File:Deutscher Freiheitssender 904.ogg
Interval signal for DFS 904

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  • Radio Katowice: Sound of a hammer striking an anvil.<ref>{{#invoke:citation/CS1|citation

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File:Voice of Turkey Interval Signal.ogg
Interval signal of Voice of Turkey as heard in 2013

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Classical radio station WQXR-FM in New York City, during its ownership by The New York Times Company, played different variations of a classical infused gong with the ID read at the same time as "The Classical Station of the New York Times, WQXR, New York (And WQXR.com 2000–2009) Template:Citation needed

Numbers station interval signalsEdit

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.

ReferencesEdit

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Further readingEdit

External linksEdit

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