Ten-code: Difference between revisions

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*[[California Penal Code]] sections were in use by the [[Los Angeles Police Department]] as early as the 1940s, and these [[Police code#The Hundred Code|Hundred Code]] numbers are still used today instead of the corresponding ten-code. Generally these are given as two sets of numbers{{Citation needed|date=July 2011}}

*The New York Fire Department uses its own ten-code system.<ref>[http://www.nyfd.com/radio.html F.D.N.Y. Radio Codes] {{webarchive|url=https://web.archive.org/web/20100915175458/http://www.nyfd.com/radio.html |date=2010-09-15 }} The Unofficial Home Page of FDNY.</ref>

*The [[NewFire Zealandand FireEmergency ServiceNew Zealand]] uses a system of "K-codes" to pass [[fire appliance]] availability statuses as well as operational messages. For example, "K1" means "proceeding to incident", "K99" means "Structure fire, well involved", and "K41" means "fatality" (a reference to the [[Ballantynes fire|Ballantyne's fire]], New Zealand's deadliest, which killed 41 people).<ref>[http://neighbourhood.org.nz/fire_codes.html "K-Codes"] {{webarchive|url=https://web.archive.org/web/20160510045941/http://neighbourhood.org.nz/fire_codes.html |date=2016-05-10 }}</ref><ref>[http://www.radiowiki.org.nz/index.php/Fire_Radio_Codes "Fire radio codes] {{webarchive|url=https://web.archive.org/web/20160419072833/http://www.radiowiki.org.nz/index.php/Fire_Radio_Codes |date=2016-04-19 }}</ref><ref name="Christchurch_library_article">{{cite web |title=Ballantynes' fire – 18 November 1947 |url=https://my.christchurchcitylibraries.com/ballantynes-fire/ |url-status=live |archiveurl=https://web.archive.org/web/20160914223140/http://my.christchurchcitylibraries.com/ballantynes-fire/ |archivedate=14 September 2016 |accessdate=31 December 2019 |publisher=[[Christchurch City Libraries]]}}</ref> The [[New Zealand Police]] also use some K-codes,<ref>{{cite web |url=http://www.radiowiki.org.nz/index.php?title=Police_K_codes |title=Police K code |publisher=Radio Wiki |date=2012-06-07 |url-status=live |archive-url=https://web.archive.org/web/20130207045316/http://radiowiki.org.nz/index.php?title=Police_K_codes |archive-date=2013-02-07 }}</ref> with completely unrelated meanings to those used by NZFSFENZ; Police code "K1" means "no further police action required".

*Telegraph and teletype procedures

**[[Q code]] and [[prosigns for Morse code]] are used in [[amateur radio]], aviation, and [[marine radio]]. They provide specific abbreviations for concepts related to aviation, shipping, RTTY, radiotelegraph, and amateur radio.<ref>{{cite web |url=http://cbradiosource.com/archives/q_codes.pdf |title=Q Codes |publisher=CB Radio Source |access-date=2010-01-23 |url-status=dead |archive-url=https://web.archive.org/web/20140814025822/http://cbradiosource.com/archives/q_codes.pdf |archive-date=2014-08-14 }}</ref> In [[radiotelegraph]] operation, a Q code is often shorter,<ref name=Qcode_10code>Ten-codes require transmission of three prefix characters "10-" and two numbers, so five characters, on top of which digits and punctuation are all long sequences in Morse (5&ndash;6&nbsp;dits or dahs). Letters are all short sequences in Morse (1&ndash;4&nbsp;dits or dahs), so the prefix "Q" and two letters is fewer characters and shorter code sequences.</ref> and provides codes standardized by meaning in all languages &ndash; essential for international [[shortwave]] radio communications.