Numbers station (English Wikipedia)

"NSNL 15: Voice stations". Cvni.net. 3 July 1999. Archived from the original on 26 January 2021. Retrieved 26 August 2010.
"E2K 32 – E22 is not what it seems". www.cvni.net. Archived from the original on 17 November 2007. Retrieved 5 April 2016.

doi.org (Global: 2^nd place; English: 2^nd place)

Ingesson, Tony; Andersson, Magnus (2024). "Clandestine communications in cyber-denied environments: Numbers stations and radio in the 21st century". Journal of Policing, Intelligence and Counter Terrorism. 19 (2): 144–165. doi:10.1080/18335330.2023.2209578.
Bury, Jan (October 2007). "From the archives: The U.S. and West German agent radio ciphers". Cryptologia. 31 (4): 343–357. doi:10.1080/01611190701578104. ISSN 0161-1194. S2CID 205487634. Archived from the original on 23 December 2012.

explorethearchive.com (Global: low place; English: low place)

"Numbers Stations: The Secret Signals That Haunt Radio Airwaves". Explore the Archive. 2 October 2024.

express.co.uk (Global: 796^th place; English: 532^nd place)

Osbourne, Simon (12 May 2017). "North Korea sends chilling coded radio messages to South Korea amid fears of WW3". Daily Express.

ghostarchive.org (Global: 64^th place; English: 28^th place)

Anthony Spinelli (18 October 2018), HM01 and Voice of Welt 11530 AM 10 18 2018 1743z, archived from the original on 11 December 2021, retrieved 26 November 2018

hfunderground.com (Global: low place; English: low place)

"Number Stations". HF Underground. Retrieved 9 March 2026. In 2001, the United States tried the Cuban Five on the charge of spying for Cuba. That group had received and decoded messages that had been broadcast from Cuban numbers stations.

hyperreal.org (Global: low place; English: low place)

irdial.hyperreal.org

Irdial-Discs, included booklet (PDF). hyperreal.org (Report). The Conet Project. p. 59. Archived from the original (PDF) on 25 April 2006.

karoo.net (Global: low place; English: low place)

simonmason.karoo.net

Mason 1991, pp. 5–6 Mason, Simon (1991). Secret Signals: The Euronumbers Mystery. Lake Geneva, WI: Tiare Publications. ISBN 0-936653-28-0. Archived from the original on 13 June 2006. Retrieved 24 December 2013.
stations KKN44, BFBX and OLX Mason, Simon. "Shortwave Espionage". Archived from the original on 3 December 2011. Retrieved 28 October 2011.
"Secret Signals". Simonmason.karoo.net. Archived from the original on 10 February 2016. Retrieved 7 November 2015.
"Secret Signals". Simonmason.karoo.net. Archived from the original on 20 February 2007. Retrieved 26 August 2010.
Mason 1991, pp. 20–21 Mason, Simon (1991). Secret Signals: The Euronumbers Mystery. Lake Geneva, WI: Tiare Publications. ISBN 0-936653-28-0. Archived from the original on 13 June 2006. Retrieved 24 December 2013.

miaminewtimes.com (Global: 2,859^th place; English: 1,532^nd place)

"Espionage Is in the Air". Miami New Times. 6 February 2001.
Sokol, Brett (8 February 2001). "Espionage Is in the Air". Miami New Times. Archived from the original on 21 February 2001.

numbers-stations.com (Global: low place; English: low place)

Schaum, Ryan (30 November 2014). "The First Numbers Stations". NSRIC.
"Numbers Stations Research". Numbers Stations Research.
"The Swedish Security Service Releases Info on a Numbers Station". NSRIC. 24 July 2015. Retrieved 12 March 2016.
"E03 The LincolnShire Poacher". Retrieved 6 September 2014.
"Intro to Numbers Stations". NSRIC. 8 February 2016. Retrieved 12 March 2016.
Māris Goldmanis, Before enigma; the early numbers stations, monitors NSRIC; retrieved 13 December 2019
"ENIGMA: The European Numbers Information Gathering and Monitoring Association". NSRIC. Retrieved 24 February 2015.

nytimes.com (Global: 7^th place; English: 7^th place)

Choe, Sang-Hun (21 July 2016). "North Korea revives coded spy broadcasts after 16 year silence". The New York Times. Retrieved 30 July 2016.

pipex.com (Global: low place; English: 9,714^th place)

apul64.dsl.pipex.com

"ENIGMA 2000". Archived from the original on 15 September 2009. Retrieved 1 March 2015.

priyom.org (Global: low place; English: low place)

"Number stations". Priyom.
"E03". Priyom.org. Retrieved 17 June 2017.
"V32". Priyom.org. Retrieved 8 March 2026.
"E03a". Priyom.org. Retrieved 17 June 2017.
"S06". Priyom.org. Retrieved 17 June 2017.

radio-weblogs.com (Global: low place; English: low place)

Wagner, Thomas (2004). "Chapter 6 – So here she was, with a pillow over her head and over the radio ...". If it had Not Been for Fifteen Minutes: A true account of espionage and hair-raising adventure. Retrieved 30 October 2013.
Wagner, Thomas (8 December 2012). "If it had not been for 15 Minutes, Chapter 7". Radio Weblogs. Archived from the original on 2 November 2013. Retrieved 18 March 2022.
Wagner, Thomas (24 April 2002). "If it had not been for 15 Minutes, Chapter 6". Radio Weblogs. Archived from the original on 1 November 2014. Retrieved 18 March 2022.

sakerhetspolisen.se (Global: low place; English: low place)

"Lyssna på ett hemligt telegram" [Listen to a secret telegram] (in Swedish). Säkerhetspolisen. 23 January 2015. Archived from the original on 8 March 2016. Retrieved 12 March 2016.

salon.com (Global: 683^rd place; English: 407^th place)

Pescovitz, David (16 September 1999). "Counting spies". Salon. Archived from the original on 19 January 2000. Retrieved 12 March 2016.

semanticscholar.org (Global: 15^th place; English: 8^th place)

api.semanticscholar.org

Bury, Jan (October 2007). "From the archives: The U.S. and West German agent radio ciphers". Cryptologia. 31 (4): 343–357. doi:10.1080/01611190701578104. ISSN 0161-1194. S2CID 205487634. Archived from the original on 23 December 2012.

sigidwiki.com (Global: low place; English: low place)

"Numbers Stations and Enigma Stations". Signal Identification Wiki. Retrieved 9 March 2026.

signalshed.com (Global: low place; English: low place)

"ENIGMA 2000 Number Stations Group". signalshed.com. Retrieved 9 March 2026.
"ENIGMA Control List & News". signalshed.com. ENIGMA 2000. Retrieved 8 March 2026.
"ENIGMA 2000 Active Station List" (PDF). signalshed.com (Booklet). 1.3. ENIGMA 2000. September 2017. Retrieved 25 August 2020.

slate.com (Global: 409^th place; English: 260^th place)

Beam, Alex (5 July 2010). "7,887 kHz: Your Home for Classic Cuban Espionage Radio". Slate.

svd.se (Global: 838^th place; English: 1,657^th place)

Catinka Mannerfelt Agneskog. "Säpos hemliga radiotelegram" (in Swedish). SvD Nyheter. Retrieved 23 January 2015.

swling.com (Global: low place; English: low place)

"New Farsi Numbers Station Reported on 7910 kHz". The SWLing Post. 5 March 2026.

theguardian.com (Global: 16^th place; English: 11^th place)

Connolly, Kate (15 January 2013). "Married pair alleged to be Russian 'cold war' type spies on trial in Germany". The Guardian. ISSN 0261-3077. Retrieved 18 June 2026.

turner.com (Global: 5,391^st place; English: 5,106^th place)

i.cdn.turner.com

"United States v. Walter Kendall Myers, United States District Court, District of Columbia, no. xxx" (PDF). Retrieved 26 August 2010.

washingtonpost.com (Global: 35^th place; English: 24^th place)

Segal, David (3 August 2004). "The shortwave and the calling: For Akin Fernandez, cryptic messages became music to his ears". The Washington Post. p. C01.

web.archive.org (Global: 1^st place; English: 1^st place)

Mason 1991, pp. 5–6 Mason, Simon (1991). Secret Signals: The Euronumbers Mystery. Lake Geneva, WI: Tiare Publications. ISBN 0-936653-28-0. Archived from the original on 13 June 2006. Retrieved 24 December 2013.
Bury, Jan (October 2007). "From the archives: The U.S. and West German agent radio ciphers". Cryptologia. 31 (4): 343–357. doi:10.1080/01611190701578104. ISSN 0161-1194. S2CID 205487634. Archived from the original on 23 December 2012.
"Lyssna på ett hemligt telegram" [Listen to a secret telegram] (in Swedish). Säkerhetspolisen. 23 January 2015. Archived from the original on 8 March 2016. Retrieved 12 March 2016.
stations KKN44, BFBX and OLX Mason, Simon. "Shortwave Espionage". Archived from the original on 3 December 2011. Retrieved 28 October 2011.
Sokol, Brett (8 February 2001). "Espionage Is in the Air". Miami New Times. Archived from the original on 21 February 2001.
Wallace & Melton 2008, p. 438 Wallace, Robert; Melton, H. Keith (June 2008). Spycraft: The Secret History of the CIA's Spytechs, from Communism to al-Qaeda (PDF). Dutton. ISBN 978-0-525-94980-0. Archived from the original (PDF) on 7 October 2016. Alt URL
Irdial-Discs, included booklet (PDF). hyperreal.org (Report). The Conet Project. p. 59. Archived from the original (PDF) on 25 April 2006.
Pescovitz, David (16 September 1999). "Counting spies". Salon. Archived from the original on 19 January 2000. Retrieved 12 March 2016.
Wagner, Thomas (8 December 2012). "If it had not been for 15 Minutes, Chapter 7". Radio Weblogs. Archived from the original on 2 November 2013. Retrieved 18 March 2022.
"NSNL 15: Voice stations". Cvni.net. 3 July 1999. Archived from the original on 26 January 2021. Retrieved 26 August 2010.
Wagner, Thomas (24 April 2002). "If it had not been for 15 Minutes, Chapter 6". Radio Weblogs. Archived from the original on 1 November 2014. Retrieved 18 March 2022.
"Secret Signals". Simonmason.karoo.net. Archived from the original on 10 February 2016. Retrieved 7 November 2015.
"Secret Signals". Simonmason.karoo.net. Archived from the original on 20 February 2007. Retrieved 26 August 2010.
"Chinese Music Station". Archived from the original on 8 March 2012. Retrieved 16 July 2012.
Mason 1991, pp. 20–21 Mason, Simon (1991). Secret Signals: The Euronumbers Mystery. Lake Geneva, WI: Tiare Publications. ISBN 0-936653-28-0. Archived from the original on 13 June 2006. Retrieved 24 December 2013.
"ENIGMA 2000". Archived from the original on 15 September 2009. Retrieved 1 March 2015.
"E2K 32 – E22 is not what it seems". www.cvni.net. Archived from the original on 17 November 2007. Retrieved 5 April 2016.

wired.me (Global: low place; English: low place)

Kumar, Ruchi (23 March 2026). "A Mysterious Farsi Numbers Station Is Broadcasting Through the Iran War". WIRED Middle East.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Bury, Jan (October 2007). "From the archives: The U.S. and West German agent radio ciphers". Cryptologia. 31 (4): 343–357. doi:10.1080/01611190701578104. ISSN 0161-1194. S2CID 205487634. Archived from the original on 23 December 2012.
Connolly, Kate (15 January 2013). "Married pair alleged to be Russian 'cold war' type spies on trial in Germany". The Guardian. ISSN 0261-3077. Retrieved 18 June 2026.
Collins, Barry W. (July 1997). "The day the U.S. Army invaded W4TLV". QST. 81: 48–49. ISSN 0033-4812.
Friesen, Christopher (2014). "Spy 'Numbers Stations' still enthrall". Radio World. 38 (2): 14. ISSN 0274-8541.

youtube.com (Global: 13^th place; English: 14^th place)

Anthony Spinelli (18 October 2018), HM01 and Voice of Welt 11530 AM 10 18 2018 1743z, archived from the original on 11 December 2021, retrieved 26 November 2018

Numbers station (English Wikipedia)

archive.org (Global: 6th place; English: 6th place)

bbc.co.uk (Global: 11th place; English: 10th place)

bbc.com (Global: 26th place; English: 23rd place)

cia.gov (Global: 133rd place; English: 275th place)

ciphermachinesandcryptology.com (Global: low place; English: low place)

cvni.net (Global: low place; English: low place)

doi.org (Global: 2nd place; English: 2nd place)

explorethearchive.com (Global: low place; English: low place)

express.co.uk (Global: 796th place; English: 532nd place)

ghostarchive.org (Global: 64th place; English: 28th place)

hfunderground.com (Global: low place; English: low place)

hyperreal.org (Global: low place; English: low place)

irdial.hyperreal.org

karoo.net (Global: low place; English: low place)

simonmason.karoo.net

miaminewtimes.com (Global: 2,859th place; English: 1,532nd place)

numbers-stations.com (Global: low place; English: low place)

nytimes.com (Global: 7th place; English: 7th place)

pipex.com (Global: low place; English: 9,714th place)

apul64.dsl.pipex.com

priyom.org (Global: low place; English: low place)

radio-weblogs.com (Global: low place; English: low place)

sakerhetspolisen.se (Global: low place; English: low place)

salon.com (Global: 683rd place; English: 407th place)

semanticscholar.org (Global: 15th place; English: 8th place)

api.semanticscholar.org

sigidwiki.com (Global: low place; English: low place)

signalshed.com (Global: low place; English: low place)

slate.com (Global: 409th place; English: 260th place)

svd.se (Global: 838th place; English: 1,657th place)

swling.com (Global: low place; English: low place)

theguardian.com (Global: 16th place; English: 11th place)

turner.com (Global: 5,391st place; English: 5,106th place)

i.cdn.turner.com

washingtonpost.com (Global: 35th place; English: 24th place)

web.archive.org (Global: 1st place; English: 1st place)

wired.me (Global: low place; English: low place)

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org

youtube.com (Global: 13th place; English: 14th place)

archive.org (Global: 6^th place; English: 6^th place)

bbc.co.uk (Global: 11^th place; English: 10^th place)

bbc.com (Global: 26^th place; English: 23^rd place)

cia.gov (Global: 133^rd place; English: 275^th place)

doi.org (Global: 2^nd place; English: 2^nd place)

express.co.uk (Global: 796^th place; English: 532^nd place)

ghostarchive.org (Global: 64^th place; English: 28^th place)

miaminewtimes.com (Global: 2,859^th place; English: 1,532^nd place)

nytimes.com (Global: 7^th place; English: 7^th place)

pipex.com (Global: low place; English: 9,714^th place)

salon.com (Global: 683^rd place; English: 407^th place)

semanticscholar.org (Global: 15^th place; English: 8^th place)

slate.com (Global: 409^th place; English: 260^th place)

svd.se (Global: 838^th place; English: 1,657^th place)

theguardian.com (Global: 16^th place; English: 11^th place)

turner.com (Global: 5,391^st place; English: 5,106^th place)

washingtonpost.com (Global: 35^th place; English: 24^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 4^th place; English: 4^th place)

youtube.com (Global: 13^th place; English: 14^th place)