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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, 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

BBC World Service: Bow Bells (English programme), three notes tuned B-B-C (non-English programme, non-Europe), four notes tuned B-B-B-E (non-English programme, to Europe).
Radiodifusión Argentina al Exterior: First eight notes of Mi Buenos Aires querido by Carlos Gardel, followed by people saying the station's name in eight languages.
Radio Australia: Chimes version of Waltzing Matilda (chorus). News signature tune: Majestic Fanfare.
Ö1: Three notes tuned O-R-F by Werner Pirchner,^[1] played on viola.
${\set Staff.midiInstrument = #"violin" c' g' c''}$
Radio Belarus: Radzima maja darahaja ("My dear Motherland").
Radio Canada International: First four notes of O Canada, played on piano or autoharp.
${\key g \major b''2 d'''4. d'''8 g''2. \skip4}$
China National Radio, China Radio International: Chime version of 义勇军进行曲 ("March of the Volunteers").
Voice of the Strait News Radio: Bell version of 三大纪律八项注意 ("Three Rules of Discipline and Eight Points for Attention") (Military anthem of China )
Radio Habana Cuba: Melody of La Marcha del 26 de Julio ("March of the 26th of July") by Agustín Díaz Cartaya
DR P1: Drømte mig en drøm i nat, played on xylophone.^[2]
Radio France Internationale: Electronic-disco, culminating in the last 8 measures of La Marseillaise.
Deutsche Welle: Celesta version of Es sucht der Bruder seine Brüder from Fidelio by Ludwig van Beethoven.
${\set Staff.midiInstrument = #"celesta" \clef bass \skip2. g4 g4. e8 g8 f8 d8 g8 a8. g16 g4 \skip2}$
Voice of Greece: The Tsopanakos (Little Shepherd), played on floghera. ^[3]
All India Radio: A tune composed by Walter Kaufmann or Thakur Balwant Singh, used since 1936.^[4]
${\set Staff.midiInstrument = #"flute" c'''16 b'' c'''4. b''8 a'' f''4 f''8 b'' a'' f'' e''4 e''16 f'' a'' f'' e''2 \skip2}$
Radio Republik Indonesia: Rayuan Pulau Kelapa ("Solace on Coconut Island"), composed by Ismail Marzuki.
Radio Japan:
Kazoe-uta (Japanese counting song)
${\set Staff.midiInstrument = #"celesta" \key a \major \time 2/4 a'8 a' cis'' a' cis''4 d''8 cis'' fis'' fis'' d'' d'' cis''4 a'8 cis'' d'' d'' cis'' a' gis'2}$

さくらさくら ("Sakura Sakura" - Cherry Blossoms)
${\set Staff.midiInstrument = #"orchestral harp" \key f \major d''4 d''4 e''2 d''4 d''4 e''2 d''4 (e'') f'' (e'') d'' (e''8 d'') bes'2}$
.
Voice of Korea: Melody of 김일성장군의 노래 ("Song of General Kim Il-sung").
Pyongyang FM - Melody of 김정일장군의 노래 ("Song of General Kim Jong-il")
KBS World Radio: Dawn.
RTL Radio: Feierwon by Michel Lentz, played on chimes.^[5]
Voice of Mongolia: Эх орон ("Motherland").^{[citation needed]}
${\set Staff.midiInstrument = #"celesta" g'4 e'' e''8. d''16 c''4 d''8. e''16 c''4 g'2}$
Radio Netherlands: Carillon version of the Eighty Years' War song Merck toch hoe sterck.
${\set Staff.midiInstrument = #"tubular bells" \key g \major e'4 dis'8 e'8 fis'4 e'8 fis'8 g'4 fis'8 e'8 fis'4 \skip4}$
Radio New Zealand International: The call of a New Zealand bellbird.
Radio Pakistan:
${\set Staff.midiInstrument = #"flute" e'1 a' gis'8 a' b' a' \times 2/3 {gis' a' b'} d''4 e''2 a''2}$
Far East Broadcasting Company: Lord Jesus to Save Sinners.
Radio Veritas Asia: O via, vita, veritas
Polish Radio External Service: Excerpt from Prząśniczka by Stanisław Moniuszko, played on piano.^[6]
RTÉ Radio 1: Chime version of O'Donnell Abú ("O'Donnell Forever").^[7]
Radio Romania International: Pui de lei by Ionel G. Brǎtianu
Radio Slovenia: Electronically generated cuckoo chirping.
Radio Sweden: Chime version of Ut i vida världen ("Out in the Wide World"), composed by Ralph Lundsten.^[8]
Radio Tirana: Këputa një gjethe dafine (transmission intro).
Radio Ukraine International: Reve ta stohne Dnipr shyrokyi.
WEWN, later EWTN Global Radio: Salve Regina
National Broadcasting Company: 3 chime-like notes.
$\relative c' {\set Staff.midiInstrument = #"electric piano 2" \time 4/4 \key c \major g2 e'2 c1 }$
Trans World Radio: What a Friend We Have in Jesus.
Voice of America: Brass band version of Yankee Doodle.
Vatican Radio: Christus Vincit, played on celesta.
${\set Staff.midiInstrument = #"celesta" \key f \major <a' a''>2 <a' a''> <c'' c'''> <c'' c'''> <f' f''> <f' f''> <a' a''> <a' a''> <d' d''> <g' g''> <c' c''> <f' f''>4 ~ <bes' bes''> <a' a''>2 ~ <g' g''>4. <f' f''>8 <f' f''>1}$
Radio Nacional de Venezuela - Canal Internacional: Beginning of Alma Llanera by Pedro Elías Gutiérrez and Rafael Bolívar.

Formerly used

BBC World Service: Trumpet version of Oranges and Lemons, first four notes of Symphony No. 5 by Beethoven, played on timpani; Lillibullero (signature tune, played on trumpet).^[9]
Radio Tirana: Trumpet version of With Pickaxe and Rifle.
${\set Staff.midiInstrument = #"trombone" \key g \minor \time 2/4 \skip4 \skip8. d''16 d''4 d''8. es''16 d''4 c''8. a'16 bes'2 g'2}$
Radio Austria International: Orchestral version of An der schönen blauen Donau ("Blue Danube Waltz") by Johann Strauss.^[10]
${\set Staff.midiInstrument = #"brass section" \key g \minor \time 3/4 bes d' f' <<{<bes d' f'>2.} {\skip2 <d'' f''>4}>> <<{<bes d' f'>2.} {<d'' f''>4 \skip4 <bes' d''>4}>> <<{<bes d' f'>2.} {<bes' d''>4} \skip2>> }$
RTBF International: Où peut-on être mieux qu’au sein de sa famille.
Rádio Nacional: Luar do Sertão.
Radio Peking (predecessor of China Radio International): Chimes version of 东方红 ("The East Is Red").
Cyprus Broadcasting Corporation: Avkoritsa by Andreas Mappouras, played on guitar
Radio Prague:
Trumpet version of Kupředu levá ("Forward, Left") by Jan Seidl
${\set Staff.midiInstrument = #"trumpet" a'8 r16 d''16 d''8 r8 e''8 d''4. b'8 r16 d''16 d''8 r8 e''8 d''4.}$

Adagio – Allegro molto from Symphony No. 9 by Dvořák.
Radio Finland: Pim-pam-pulla by A. O. Väisänen.^[11]
${\set Staff.midiInstrument = #"celesta" \key f \major <c'' f' f>2 bes'4 a'4 g'2 <a' f'> c'' bes'4 a'4 g'2 r2 <a' f' f>1}$
Radio France Internationale: Trumpet version of a popular song Nous n'irons plus au bois.^[10]
${\set Staff.midiInstrument = #"trumpet" \key f \major \time 2/4 \skip8 f'8 a'8 bes'8 c''4 d''4 c''8 bes'8 a'8 c''8 bes'4 a'8( g'8) f'8 \skip8 \skip4}$
Berliner Rundfunk: Motif from the opera Regina by Albert Lortzing, played by trumpets.
Radio Berlin International: Beginning of Auferstanden aus Ruinen ("Risen from Ruins"), played on chimes.
${\set Staff.midiInstrument = #"electric piano 1" \key f \major \time 2/4 <a' f'>4 <a' f'> <g' c'> <f' bes> <bes' g'> <bes' g'> <a' f'> <g' c'>}$
Radio DDR: First few bars of Wann wir schreiten Seit’ an Seit’.
Deutschlandfunk: Celesta version of Dir, Land voll Lieb' und Leben from "Ich hab mich ergeben" by Hans Ferdinand Maßmann.^[12]
${\set Staff.midiInstrument = #"celesta" \time 4/4 \skip2. d''4 <b'' g''>4 <b'' g''>4 <d''' b''>4 <b'' g''>4 <fis'' a''>4 r4 <d'' fis''>4 \skip4}$
Radio Budapest: Excerpts from the suite 1848 by T.K. Polgar played on 3 trumpets and 2 cornets.
${\set Staff.midiInstrument = #"french horn" e''2-- a''8 e''8 d''8. fis''16 e''1-- e''4-_ e''8-. e''8-. a''8 e''8 d''8. fis''16 e''1}$
Kol Yisrael: Trumpet and drum version of Hatikvah.
${\set Staff.midiInstrument = #"muted trumpet" d' <f' d''>4 <f' d''>4<f' d''>4 <<{a'2} {c''8 d''8 c''8 bes'8}>> <<{a'1} {\set Staff.midiInstrument = #"timpani" \clef bass d,8 a,, d, a,, d,4}>>}$
Rai Italia Radio: Mechanically generated canary chirping.
Trans World Radio: Hymne Monégasque
${\set Staff.midiInstrument = #"electric piano 1" \key f \major c'2 f'4. g'8 a'2 bes'4. a'8 g'2 a'4. g'8 f'2 c'4. r8 c''2 c''4. c''8 c''2. r8 f'8 g'4. a'8 bes'4. a'8 g'2 r2}$
NPO: First seven notes of Wilhelmus, played on clarinet (Radio 1 and Radio 5), synthesizer (Radio 3), spinet (Radio 4) and carillon (Radio 2).^[13]
NRK P1: Motif from Sigurd Josarfal by Edward Grieg.^[14]
Radio Norway International (former international service of NRK): Ancient folk tune from the Hallingdal region^[15] and
${\set Staff.midiInstrument = #"xylophone" \time 3/4 \skip2 \skip8 bes'8 bes'16 bes'16 d''16 f''16 es''16 d''16 es''8 ~ es''8 es''8 d''16 bes'8. c''16 as'8. bes'4 ~ bes'2 r8 bes'8 bes'16 bes'16 d''16 f''16 es''4. des''8 ces''8 bes'16 as'16 ges'4. ges'8 as'8 bes'16 des''16 ces''8 bes'4 as'8 ges'16 f'16 ges'16 f'16 es'16 f'16 ges'8 ~ ges'8 as'8 ges'16 f'16 ges'16 f'16 es'16 f'16 ges'8 ~ ges'8 f'8 es'8 des'8 es'2 bes2 \skip4}$
Radio Katowice: Sound of a hammer striking an anvil.^[16]
Radio Polonia: Piano version of Etude No. 12 ("Revolutionary Etude") by Frédéric Chopin.
$<<{\key c \minor \skip2 \skip8. <c'' c'''>16[ <d'' d'''>8. <es'' es'''>16] <es'' es'''>2 r8. <g'' es'' c'' g'>16[ <g'' es'' c'' g'>8.\< <g'' es'' c'' g'>16]\! <as'' es'' c'' as'>2\> <g'' es'' c'' g'>2\!} {\key c \minor \clef bass \skip2. es16\> d c g,\! c,\< g, c d es g c' d'\! es'\> d' c' g es d c g,\! c,\< g, c d\! es\> d c g,\! c,2}>>$
Radio Bucharest 1 and Radio Bucharest External Service (pre-1989): Fragment from Cantata anilor luminǎ by Anatol Vieru
Radio Mayak: Vibraphone version of Moscow Nights.
Voice of Russia: "Majestic" chorus from the "Great Gate of Kiev" portion of Pictures at an Exhibition by Mussorgsky.
Radio Serbia: Bože pravde.
Radio Slovakia International: Kto za pravdu horí.
Radio RSA (former international service of Apartheid-era South African Broadcasting Corporation): Bokmakierie chirping and first bars of Ver in die Wereld, Kittie, played on guitar.^[10]^[17]
Radio Sweden: Opening notes of Carl Michael Bellman's Storm och böljor tystna r'en.^[10]
Radio Beromünster: D' Zit isch do, played on music box.
Swiss Radio International: Lueget, vo Berg und Tal.
${\set Staff.midiInstrument = #"accordion" \key f \major \time 3/8 a'8 bes'8 a'8 g'8 c'8 a'8 f'4. c'8 d'8 c'8 f'8 a'8 c''8 g'4.}$
Voice of Turkey: Makam, played on piano.
Radio Moscow (former international service of the Soviet Union):
Песня о Родине ("Wide Is My Motherland")
${\set Staff.midiInstrument = #"electric piano 1" \key g \major \skip2. d'8. d'16 g'4. fis'8 e'8 fis'8 g'8 a'8 g'4 d' \skip2}$

Midnight in Moscow, played by balalaika.
WYFR: First two bars of To God Be the Glory by William Howard Doane played by brass band
Radio Yugoslavia (1980-1989): First bar of Druže Tito, mi ti se kunemo by Nikola Hercigonja, in various orchestral renditions
Radio Yugoslavia, later International Radio of Serbia and Montenegro: Jugoslavijo by Nikola Hercigonja.

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

^ Ö1 gehört gehört, p. 218.
^ https://www.youtube.com/watch?v=lpDQYdoIQ0w
^ https://www.youtube.com/watch?v=Q_jNvmGDqwk
^ Tuning into broadcast history. The Hindu BusinessLine, 15 October 2015.
^ http://www.radioforen.de/index.php?threads/pausenzeichen-und-ihre-musikalischen-quellen.21902/page-3
^ https://www.youtube.com/watch?v=ztH0_2ueIYc
^ [1]
^ Radio Sweden interval signal Retrieved 2011-11-24.
^ BBC World Service (Europe) interval signal Retrieved 2013-10-09.
^ ^a ^b ^c ^d Frost, J. M. World Radio TV Handbook. New York: Billboard Publications, 1983.
^ yle.fi
^ http://www.kalter-krieg-im-radio.de/index.php?er=18#
^ nl:Pauzeteken^{[better source needed]}
^ http://www.ontheshortwaves.com/Articles/The_Interval_Signal.pdf
^ Frost, Jens Mathiesen. World Radio-TV Handbook. London: Billboard Publications, 1974.
^ Youtube
^ DX LISTENING DIGEST 7-043

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.

External links

Interval Signals Online
Nobuyuki Kawamura's Interval Signal Library
IntervalSignal DataBase (German) English version
Uwe Volk's Sound Library (available both in English and in German)
Kurzwelle-Historisch
Interval signals on Live-Radio.net

[1] Ö1 gehört gehört, p. 218.

[2] ttps://www.youtube.com/watch?v=lpDQYdoIQ0w

[3] ttps://www.youtube.com/watch?v=Q_jNvmGDqwk

[4] Tuning into broadcast history. The Hindu BusinessLine, 15 October 2015.

[5] ttp://www.radioforen.de/index.php?threads/pausenzeichen-und-ihre-musikalischen-quellen.21902/page-3

[6] ttps://www.youtube.com/watch?v=ztH0_2ueIYc

[7] [1]

[8] Radio Sweden interval signal Retrieved 2011-11-24.

[9] BBC World Service (Europe) interval signal Retrieved 2013-10-09.

[WRTH1983-10] Frost, J. M. World Radio TV Handbook. New York: Billboard Publications, 1983.

[11] yle.fi

[12] ttp://www.kalter-krieg-im-radio.de/index.php?er=18#

[13] :Pauzeteken^{[better source needed]}

[14] ttp://www.ontheshortwaves.com/Articles/The_Interval_Signal.pdf

[WRTH1974-15] Frost, Jens Mathiesen. World Radio-TV Handbook. London: Billboard Publications, 1974.

[16] Youtube

[17] DX LISTENING DIGEST 7-043

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 * {{Flagicon|Canada}} [[Radio Canada International]]: First four notes of ''[[O Canada]]'', played on piano or [[autoharp]]. <score vorbis="1">{\key g \major b''2 d'''4. d'''8 g''2. \skip4}</score>
 * {{Flagicon|China}} [[China National Radio]], [[China Radio International]]: Chime version of ''义勇军进行曲'' ("[[March of the Volunteers]]").
-* {{Flagicon|China}} [[Voice of the Strait]] News Radio: Bell version of ''三大纪律八项注意'' ("[[Three Rules of Discipline and Eight Points for Attention]]").
+* {{Flagicon|China}} [[Voice of the Strait]] News Radio: Bell version of ''三大纪律八项注意'' ("[[Three Rules of Discipline and Eight Points for Attention]]") ([[Military anthem of China]] )
 * {{Flagicon|Cuba}} [[Radio Habana Cuba]]: Melody of ''La Marcha del 26 de Julio'' ("March of the 26th of July") by Agustín Díaz Cartaya
 * {{Flagicon|Denmark}} [[DR P1]]: ''[[Drømte mig en drøm i nat]]'', played on xylophone.<ref>https://www.youtube.com/watch?v=lpDQYdoIQ0w</ref>