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The switch to the format, with no DJs and few songs before 1980 was termed The Day the Music Died by some New Yorkers and has drawn criticism even from non-listeners of the station.
One of the early originators of the Jack FM format was radio programmer Bob Perry, on a United States-based Internet radio stream in 2000.
Beginning in late 2002, several Canadian radio stations owned by Rogers Communications starting using the format.
NRC Broadcasting's KJAC in Denver was the first US station to adopt the "Jack FM" format on April 14, 2004. (It has since switched to a public radio adult album alternative format.)
On June 3, 2005, at 5:00 p.m., WCBS-FM, an oldies station in New York City, flipped to Jack FM without any prior warning.
On July 5, 2005, it was announced that Bohn & Associates Media and Wall Media formed SparkNet Communications L.P. as the exclusive international licensor and owner of the Jack FM format.
In late September 2005, CJAQ-FM in Toronto, announced that it would become the first DJ-free station in Canada.
On October 25, 2005, Infinity Broadcasting, part of CBS, announced that it would be replacing Howard Stern with Jack FM on some of its stations.
In May 2006, the playlist of CJAQ-FM in Toronto evolved into a mainstream rock format.
In January 2007, KAJR in California's Coachella Valley launched as a "Jack FM" affiliate in a region unable to receive the KCBS-FM signal from Los Angeles, 100 miles (160 km) to the west.
G) returned to the station, along with newsman Al Meredith (who had stayed at the station during Jack FM doing his Sunday morning public affairs show), as well as DJ Pat St John who had previously left CBS-FM for Q104.3 about a year before the flip to Jack. As a result, on July 6, 2007, WCBS-FM announced it would drop Jack FM and restore the station's old format on July 12 with an updated classic hits approach, a move attributed mostly to the newly appointed CBS Radio CEO Dan Mason.
106 Jack FM Oxford started broadcasting at 1:06 PM BST on October 18, 2007.
Steve O'Brien, a weekend and fill-in DJ at the time of the format change, also returned in a similar capacity in 2008.
By February 1, 2010, that station became soft adult contemporary-formatted KJJZ.
Just as with WCBS-FM in New York, WJMK Chicago ended the Jack FM format and reverted to classic hits in 2011.
On June 29, 2012, it was announced that KJQN in Salt Lake City would drop the "Jack FM" format on July 16, 2012, and begin to simulcast the talk radio format of KLO.
On August 2, 2013, KFMB-FM, the Jack FM station in San Diego, began restricting access to its online stream to listeners within the city of San Diego proper.
On February 28, 2014, CFLT-FM in Halifax, Nova Scotia flipped formats to Jack FM becoming the latest Rogers radio station to adopt the Jack branding.
On December 26, 2017 at midnight, KSAJ-FM in Topeka, Kansas flipped formats from oldies to Jack FM.
Within the US, distributed originally by ABC Radio and later acquired by Dial Global (now Westwood One). In September 2019, Skyview Networks took over the US distribution rights from Westwood One.
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