Office de Radiodiffusion Télévision Française (Interval Signal): Circa 1970

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Broadcaster: ORTF Paris France 1970

Date of recording: 1970

Frequency: 9.620 MHz

Reception location: Ancaster, Ontario, Canada

Receiver and antenna: Hallicrafters S-52 using a longwire antenna

Notes: Here is the interval signal of the ORTF in Paris, France circa 1970. In my early days of shortwave listening, their nice clear French language announcement was good practice prior to tackling weaker African signals in the often static ridden tropical bands.

Radio Nacional del Paraguay: Circa 1997

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Broadcaster: Radio Nacional del Paraguay

Frequency: 9.735

Recption location: Thamesford, Ontario, Canada

Receiver and antenna: Panasonic RF-3100 and longwire antenna

Notes: It was always a treat to find Radio Nacional del Paraguay in Asuncion on 9735 kHz. and listen to their amazing music typical of that part of South America. This recording was made in early 1997 but is of unfortunately short duration. Announcements including station identification are in Spanish.

Radio Kuwait (Interval Signal): circa 1970

Photo by Brett Jordan

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Here is Radio Kuwait circa 1970, signing on in English with their interval signal, chimes, and giving their frequency information. They were transmitting on 15345 kHz to Europe at 1600 hours UTC. This recording was made in Ancaster, Ontario, Canada using a Hallicrafters S-52 receiver and a long wire antenna. Only used an open mike next to the speaker for this.

Broadcaster: Radio Kuwait

Starting time: 1600

Frequency: 15.345 MHz

Recption location: Ancaster, Ontario, Canada

Receiver and antenna: Hallicrafters S-52 using a longwire antenna

Qatar Broadcasting Service (Interval Signal): February 21, 1999

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Recorded on February 21, 1999, this is the Qatar Broadcasting Service from Doha signing on with their interval signal and announcement in Arabic. They were using 7210 kHz and a little amateur radio interference can be heard as one might expect. Receiver location was Coe Hill, Ontario, Canada.

Broadcaster: Qatar Broadcasting Service

Date of recording: 2/21/1999

Starting time: 0245 UTC

Frequency: 7.210 MHz

Reception location: Coe Hill, Ontario, Canada

Receiver and antenna: Drake SW-8 and a long wire antenna

Voz Cristiana (Santiago, Chile): April 28, 1998

Photo by Kevin Fuentealba Mol

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Radio station Voz Cristiana from Santiago, Chile is heard here with a test transmission and announcement in English on April 28, 1998. My logbook says they were operating on 21550 kHz. Receiving post was in Thamesford, Ontario, Canada and I was using a Panasonic RF-3100 portable receiver hooked up to a longwire antenna.

Broadcaster: Voz Cristiana, Santiago, Chile

Date of recording: 4/28/1998

Frequency: 21.550 MHz

RX location: Thamesford, Ontario, Canada

Receiver and antenna: Panasonic RF-3100 and longwire antenna

Radio Republik Indonesia Jakarta (Interval Signal): April 11, 1998

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Probably my favourite interval signal of all time, the Song of the Coconut Islands, used by Radio Republik Indonesia stations. Here we have Jakarta on 15150 kHz signing on April 11, 1998. Their signal had to travel over 15800 km to get to my receiver in southern Ontario, Canada, so there is a little flutter which is expected. Receiving equipment consisted of a Panasonic RF-3100 portable hooked up to a long wire antenna.

Broadcaster: Radio Republik Indonesia Jakarta

Date of recording: 4/11/1998

Frequency: 15.150

Reception location: Thamesford, Ontario, Canada

Receiver and antenna: Panasonic RF-3100 and longwire antenna

Radio Madagasikara (Interval Signal): February 18, 1997

Many thanks to SWLing Post contributor, Dan Greenall, who shares the following recording and notes:

Rarely logged here, the interval signal from Radio Madagasikara broadcasting from the island of Madagascar, as heard in Thamesford, Ontario, Canada on February 18, 1997 at sign on around 0258 hours UTC on 5010 kHz shortwave. Their national anthem is played followed by announcements which are of unfortunately low modulation. The receiver used was a Panasonic RF-3100 portable and a longwire antenna.

Broadcaster: Radio Madagasikara

Date of recording: 2/18/1997

Starting time: 0258

Frequency: 5.010 MHz

Reception location: Thamesford, Ontario, Canada

Receiver and antenna: Panasonic RF-3100 and longwire antenna

FEBA Seychelles (Interval Signal): February 22, 1973

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Some of my old audio cassette tapes from the 1970's contain unedited material from my shortwave listening activities that has never been labelled or properly organized. Upon playing one such cassette, I found this recording of radio station FEBA Seychelles. After cross checking this with some entries in my old log book, I discovered it was made on February 22, 1973 around 1800 hours UTC on a frequency of 11955 kHz. My receiver was a Realistic DX150A and a longwire antenna. Receiver location was Ancaster, Ontario, Canada. A part of their interval signal "What a Friend We Have in Jesus" is played in this recording.

Action Radio (Guyana Broadcasting Service): March 12, 1972

Many thanks to SRAA contributor, Dan Greenall, for sharing the following recording and notes:

Broadcaster: Action Radio (Guyana Broadcasting Service)

Date of recording: 3/12/1972

Starting time: believe it was around 0900 UTC

Frequency: 3.290 MHz

Recption location: Ancaster, Ontario, Canada

Receiver and antenna: Hallicrafters S-52 using a longwire antenna

Notes: "Action Radio" (the Guyana Broadcasting Service) from Georgetown recorded signing on for the day in March 1972 on 3290 kHz shortwave. Their guitar interval signal is heard at first, a short musical interlude, then announcements in English giving frequencies used and local time as 5 o'clock in the morning. Initially taped on a reel-to-reel recorder, a copy was made shortly thereafter on a cassette (now 50 years old) from which this digital version was made.

Trans World Radio (Interval Signal): November 2, 1996

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Broadcaster: Trans World Radio, Swaziland

Date of recording: 11/2/1996

Starting time: 0358

Frequency: 4.750 MHz

Reception location: Thamesford, Ontario, Canada

Receiver and antenna: Panasonic RF-3100 and longwire antenna

Notes: Here is the interval signal of Trans World Radio in Swaziland as received here in Ontario, Canada on November 2, 1996. If you could hear this station well, it was likely a good time to try for other more difficult catches.

La Voix Du Zaire (Interval Signal): November 20, 1971

Hallicrafters S-52 (Image Source: Rich Post, K8TAD)

Many thanks to SRAA contributor, Dan Greenall, for the following recording and notes:

Notes: Another short clip from an old 1971 cassette tape, La Voix du Zaire in French with multiple station ID's. In the 1970's, I typically recorded stations in the hope of catching a station identification and a few details for a reception report. This one did help me get a nice QSL letter from the station.

Date of recording: 11/20/1971

Frequency: 15.245 MHz

RX location: Ancaster, Ontario, Canada

Receiver and antenna: Hallicrafters S-52 using a longwire antenna

Rádio Nacional da Amazônia (Frequency Announcement): July 14, 2021

Radio National Amazonia.jpeg

Many thanks to SRAA contributor, Paul Walker, who shares the following frequency announcement recording of Rádio Nacional da Amazônia, recorded on 11,780 kHz. The date of the recording is July 14, 2021 (time not noted) and reception location was McGrath, Alaska.

Radio Tawantinsuyo (Peru): 1970s

Old QSL from Radio Tawantinsuyo, Cuzco, Peru

Old QSL from Radio Tawantinsuyo, Cuzco, Peru

Thanks to SRAA contributor Dan Robinson for these notes and audio of Radio Tawantinsuyo, Cuzco, Peru


Rising early in the morning was a regular activity of DX’ers who wanted to hear the more difficult stations from Latin America that used to fill the shortwave bands. One of those was Radio Tawantinsuyo, located in Cuzco, Peru. The station was on 6,175 khz in the 49 meter band but was more often heard on variable frequencies as low as 6,173 khz. This recording of the station sign on brings back so many memories for DX’ers who focused on South America.

Radio Botswana Interval Signal: January 2, 1981

Pilot-T-133-Dial-1024x678.jpg

Many thanks to SRAA contributor, Jerry Johnston, who has kindly shared his collection of airchecks with the archive. The following recording and notes originally appeared on Jerry’s website.

Sebele, Botswana
1981-01-02     0357 GMT     4845 kHz
10 kW

Cow bells and cows mooing interval signal.

Duration:   0:58
Filename:  19810102_0357_Radio-Botswana_Botswana_4845.mp3
Bitrate Mode:  vbr      Channel Mode:  mono      Sample Rate:  44100 Hz
Received By:  Jerry Johnston
Receiving Location:  Lexington, Kentucky, USA

Interval Signals: Bangkok Meteorological Radio 1994 "Music Box Interval Signal"

Kenwood-R-1000-Encoder-Dial-2-1024x678.jpg

Many thanks to SRAA contributor, Jerry Johnston, who shares the following recording from his extensive collection off interval signals.

Duration: 2:07

Filename: Bangkok-Meteorological-Radio_Thailand.mp3 (1.27 MB)

Bitrate Mode: vbr Channel Mode: mono Sample Rate: 44100 Hz

Received By: Jerry Johnston

Receiving Location: Maywoods Environmental Laboratory DXpedition, Crab Orchard, Kentucky, USA

Interval Signals: BBC World Service 1980/1981

SX-99-Dial-Nar.jpg

Many thanks to SRAA contributor, Jerry Johnston, who shares the following recording from his extensive collection off interval signals.

Duration: 0:34

Filename: BBC_England_(Bow-Bells).mp3 (319.35 kB)

Bitrate Mode: vbr Channel Mode: mono Sample Rate: 44100 Hz

Received By: Jerry Johnston

Receiving Location: Lexington, Kentucky, USA

Duration: 0:33

Filename: BBC_England_(Four-notes-B-B-B-E).mp3 (317.23 kB)

Bitrate Mode: vbr Channel Mode: mono Sample Rate: 44100 Hz

Received By: Jerry Johnston

Receiving Location: Lexington, Kentucky, USA

Interval Signals: All India Radio (AIR) 1990/1991

AllIndiaRadioLogo1.jpg

Many thanks to SRAA contributor, Jerry Johnston, who shares the following recording from his extensive collection off interval signals.

Filename: All-India-Radio-(AIR)_India.mp3 (1.1 MB)

Bitrate Mode: vbr Channel Mode: mono Sample Rate: 44100 Hz

Received By: Jerry Johnston

Receiving Location: Lexington, Kentucky, USA