Interval signal

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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 and by some domestic broadcasters. Played before commencement or during breaks in transmission, or (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 for the station.
  • 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.

Broadcasting services and interval signals[edit]

Formerly used[edit]

Numbers stations interval signals[edit]

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.

Sources Used[edit]

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. 

References[edit]

  1. ^ BBC World Service (Europe) interval signal Retrieved 2013-10-09.
  2. ^ [1]
  3. ^ Radio Sweden interval signal Retrieved 2011-11-24.
  4. ^ a b c d Frost, J. M. World Radio TV Handbook. New York: Billboard Publications, 1983.
  5. ^ Frost, Jens Mathiesen. World Radio-TV Handbook. London: Billboard Publications, 1974.
  6. ^ DX LISTENING DIGEST 7-043

External links[edit]