Editing Time signal (section)

===General broadcasters===
As radio receivers became more widely available, broadcasters included time information in the form of voice announcements or automated tones to accurately indicate the hour. The [[BBC]] has included time "[[Greenwich Time Signal|pips]]" in its broadcasts from 1922.<ref name=Burns04/>

In the United States many information-based radio stations (full-service, all-news and news/talk) also broadcast time signals at the beginning of the hour. In New York, [[WCBS (AM)|WCBS]] and [[WINS (AM)|WINS]] have distinctive beginning-of-the-hour tones, though the WINS signal is only approximate (several seconds error).{{Citation needed|date=March 2018|reason=Is this possibly due to lack of correction for the delay for HD Radio?  Typically stations employing HD Radio delay analog transmission so that if a receiver is hopping between HD and analogue the audio will be roughly synchronized. Many radio stations need to join and leave a network so their time is usually pretty accurate.}} WINS also has a tone at 30&nbsp;minutes past the hour for those setting their clocks. [[WTIC-AM|WTIC]] uses the [[Morse code]]&nbsp;V for victory to the tune of [[Beethoven's 5th Symphony]] at the beginning of the hour continuously, since 1943.

Broadcast stations using iBiquity Digital's "[[HD Radio]]" system are contractually required<ref>{{cite report |title=Licensing fact sheet 2009 |publisher=iBiquity Digital Corporation |url=http://www.ibiquity.com/i/Licensing_%20Fact_%20Sheet_2009.pdf |via=ibiquity.com |archive-url=https://web.archive.org/web/20110713000748/http://www.ibiquity.com/i/Licensing_%20Fact_%20Sheet_2009.pdf |archive-date=13 July 2011 }}</ref> to delay their analog broadcast by about eight seconds, so it remains in sync with the digital stream. Thus, network-generated time signals and service cues will also be delayed by about eight seconds. (Because of the delay, when [[WBEN (AM)|WBEN-AM]] in [[Buffalo, New York]] was broadcasting time markers, and was simulcast on an FM station that broadcast in HD; the FM signal did not carry the time signal. WBEN does not broadcast in HD.) Local signals may also be delayed.

The [[all-news radio]] stations of the [[CBS Radio Network]], of which WCBS is the flagship, air a "bong" (at a frequency of 440&nbsp;Hz – the international standard for the [[A440 (pitch standard)|musical note {{sc|'''A'''}} ]]) that immediately precedes each top-of-the-hour network newscast. (The same bong could be heard on the [[CBS]] Television Network, at the top of the hour immediately before the beginning of any televised program, in the 1960s and 1970s.) An automated "chirp" at one second before the hour signals a switch to the radio network broadcast. As an example, [[KNX (AM)|KNX]], the CBS Radio Network all-news station in Los Angeles, broadcasts this "bong" sound on the hour. However, due to buffering of the digital broadcast on some computers, this signal may be delayed as much as 20&nbsp;seconds from the actual start of the hour (this is presumably the same situation for all CBS Radio stations, as each station's digital stream is produced and distributed in a similar manner), though unlike program content which is on a [[broadcast delay]] for content concerns, the time signal airs as-is over-the-air, meaning it can sometimes be talked over during a live news event or sports play-by-play. [[KYW-AM]] in Philadelphia broadcasts a time signal at the top of the hour along with its [[jingle]].

[[Bonneville International]]-owned news/talk station [[KSL (radio)|KSL]] (AM-FM) in Salt Lake City uses a "clang" that originates from the Nauvoo Bell on Temple Square, in Salt Lake City, which has been a staple on the station since the early 1960s.

In Canada, the national English-language non-commercial [[CBC Radio One]] network broadcast the daily [[National Research Council Time Signal]] from 5&nbsp;November 1939<ref>{{cite news |first=Geoff |last=Bartlett |date=5 November 2014 |title='The beginning of the long dash' indicates 75&nbsp;years of official time on CBC |website=[[CBC News]] (cbc.ca) |url=http://www.cbc.ca/news/canada/newfoundland-labrador/the-beginning-of-the-long-dash-indicates-75-years-of-official-time-on-cbc-1.2823599 |access-date=8 April 2018}}</ref> until 9&nbsp;October 2023.<ref name=cancel>{{cite news |last1=Taekema |first1=Dan |date=10 October 2023 |title=The end of the long dash: CBC stops broadcasting official 1&nbsp;{{sc|p.m.}} time signal |website=[[CBC News]] (cbc.ca) |url=https://www.cbc.ca/news/canada/ottawa/cbc-stops-broadcasting-national-research-council-long-dash-time-signal-1.6988903 |access-date=2 December 2023 }}</ref> The simulcast would occur daily at 1pm [[Eastern Time]]. Its French-language counterpart, [[Canadian Broadcasting Corporation|Radio-Canada]], broadcasts a similar signal at noon. [[Vancouver]] radio station [[CKNW]] also broadcasts time signals, using a chime every half-hour. Time signals on CBC broadcasts may be delayed up to 3&nbsp;seconds due to network processing delays between the local radio transmitter and the time signal origin in Ottawa. The CBC's predecessor, the [[CNR Radio|Canadian National Railways Radio network]], broadcast the time signal over its [[CBO-FM|Ottawa station]], CNRO (originally CKCH), at 9 pm daily and also on its Moncton station, CNRA, beginning in 1923. CNRA closed in 1931 but the broadcasts continued on CNRO when the station was acquired by the [[Canadian Radio Broadcasting Commission]] in 1933 and by the CBC in 1936 before going national in 1939.<ref>{{cite news |title=The beginning of the long dash |year=1939 |series=CBC Archives |website=[[CBC News]] (cbc.ca) |url=http://www.cbc.ca/archives/categories/science-technology/measurement/general-5/1939-the-beginning-of-the-long-dash.html |access-date=8 April 2018 <!-- as of January 2024 --> |archive-date=8 June 2016 |archive-url=https://web.archive.org/web/20160608070931/http://www.cbc.ca/archives/categories/science-technology/measurement/general-5/1939-the-beginning-of-the-long-dash.html |url-status=dead }}</ref>

In Australia, many information-based radio stations broadcast time signals at the beginning of the hour, and a [[Speaking clock#Australia|speaking clock]] service was also available until October&nbsp;2019.  However, the [[Radio VNG|VNG]] dedicated time signal service has been discontinued.<ref>{{cite report |first1=Alfred |last1=Kruijshoop |first2=Marjorie |last2=Walker |section=Introduction |title=Time NZ & A |url=http://tufi.alphalink.com.au/time |archive-url=https://archive.today/20121230125806/http://tufi.alphalink.com.au/time/time_hf.html |url-status=dead |archive-date=30 December 2012 |via=tufi.alphalink.com.au |access-date= 23 November 2013 }}</ref>

In Cuba, [[Radio Reloj]] is a radio station which has a time signal over news. Radio Reloj translates to Clock Radio.