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HandWiki. Scanner (Radio). Encyclopedia. Available online: https://encyclopedia.pub/entry/36256 (accessed on 04 October 2026).
HandWiki. Scanner (Radio). Encyclopedia. Available at: https://encyclopedia.pub/entry/36256. Accessed October 04, 2026.
HandWiki. "Scanner (Radio)" Encyclopedia, https://encyclopedia.pub/entry/36256 (accessed October 04, 2026).
HandWiki. (2022, November 24). Scanner (Radio). In Encyclopedia. https://encyclopedia.pub/entry/36256
HandWiki. "Scanner (Radio)." Encyclopedia. Web. 24 November, 2022.
Scanner (Radio)
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The content is sourced from: https://handwiki.org/wiki/Engineering:Scanner_(radio)

A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases. The terms radio scanner or police scanner generally refer to a communications receiver that is primarily intended for monitoring VHF and UHF landmobile radio systems, as opposed to, for instance, a receiver used to monitor international shortwave transmissions. More often than not, these scanners can also tune to different types of modulation as well (AM, FM, WFM, etc.). Early scanners were slow, bulky, and expensive. Today, modern microprocessors have enabled scanners to store thousands of channels and monitor hundreds of channels per second. Recent models can follow trunked radio systems and decode APCO-P25 digital transmissions. Both hand held and desktop models are available. Scanners are often used to monitor police, fire and emergency medical services. Radio scanning serves an important role in the fields of journalism and crime investigation, as well as a hobby for many people around the world.

radio receiver modern microprocessors medical

References

  1. Curtis, Anthony R. (July 1977). "Computerized scanners". Popular Mechanics 148 (1): 68–70. https://books.google.com/books?id=tOIDAAAAMBAJ&pg=PA70. Retrieved 1 June 2011. 
  2. Kneitel, Tom (1986). The "Top Secret" registry of U.S. Government radio frequencies. Commack, NY: CRB Research. ISBN 0-939780-06-2. 
  3. "Art. 617 bis codice penale - Installazione di apparecchiature atte ad intercettare od impedire comunicazioni o conversazioni telegrafiche o telefoniche". http://www.brocardi.it/codice-penale/libro-secondo/titolo-xii/capo-iii/sezione-v/art617bis.html. Retrieved 22 September 2018. 
  4. "Radiocommunications Act 1989 No 148 (as at 28 September 2017), Public Act Contents – New Zealand Legislation". http://www.legislation.govt.nz/act/public/1989/0148/latest/DLM195576.html. Retrieved 22 September 2018. 
  5. "Listen to Live ATC (Air Traffic Control) Communications - LiveATC.net". http://www.liveatc.net/. Retrieved 22 September 2018. 
  6. "The law regarding listening to UK air traffic. - Heathrow Airport Information". 12 April 2011. http://www.heathrow-london.co.uk/airport/plane-spotters/the-law-regarding-listening-to-uk-air-traffic. Retrieved 22 September 2018. 
  7. "Are Police Scanners Legal? Police Scanner Laws in the U.S.". http://www.zipscanners.com/resources/are-police-scanners-legal. Retrieved 22 September 2018. 
  8. FCC (1997-07-10). DA 97-1440: Manufacturing Illegal Scanners Includes Scanner Modification. Federal Communications Commission, 10 July 1997. Retrieved from http://www.fcc.gov/Bureaus/Engineering_Technology/Public_Notices/1997/da971440.txt.
  9. §397 Equipping motor vehicles with radio receiving sets http://public.leginfo.state.ny.us/lawssrch.cgi?NVLWO:
  10. "Statutes & Constitution :View Statutes  : Online Sunshine". http://www.leg.state.fl.us/Statutes/index.cfm?App_mode=Display_Statute&Search_String=&URL=0800-0899/0843/Sections/0843.16.html. Retrieved 22 September 2018. 
  11. "Michigan Legislature - Section 750.508". http://legislature.mi.gov/doc.aspx?mcl-750-508. Retrieved 22 September 2018. 
  12. FCC (1993-09-03). PR Docket 91-36: In the Matter of Federal Preemption of State and Local Laws Concerning Amateur Operator Use of Transceivers Capable of Reception Beyond Amateur Service Frequency Allocations—Memorandum Opinion and Order. Federal Communications Commission, 3 September 1993. Retrieved from http://www.arrl.org/files/file/pr91-36.pdf.
  13. A partial copy of the Electronic Communications Privacy Act of 1986 can be found at http://floridalawfirm.com/privacy.html with the following disclaimer: "This document was originally published by Florida Law Firm in 1998. It is no longer current and should not be relied upon for any reason."
  14. Radiocommunication Act: An Act respecting radiocommunication in Canada. R.S., 1985, c. R-2, s. 1; 1989, c. 17, s. 2. http://laws.justice.gc.ca/PDF/Statute/R/R-2.pdf
  15. Gonczol, David (13 April 2012). "Police Hope to End Rebroadcasting of Scanners". Ottawa Citizen. https://ottawacitizen.com/news/Police+hope+rebroadcasting+scanners/6457392/story.html. Retrieved 14 April 2012. 
  16. "Ley de Vías Generales de Comunicación - 73". http://www.diputados.gob.mx/LeyesBiblio/pdf/73.pdf. 
  17. "Vrije signalen uit de ether - ICTRecht juridisch adviesbureau". https://ictrecht.nl/juridisch-advies/vrije-signalen-uit-de-ether/. Retrieved 22 September 2018. 
  18. Raad, Parket bij de Hoge (8 April 2008). "ECLI:NL:PHR:2008:BC4284, voorheen LJN BC4284, Parket bij de Hoge Raad, 03362/06". https://uitspraken.rechtspraak.nl/inziendocument?id=ECLI:NL:PHR:2008:BC4284. Retrieved 22 September 2018. 
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