1090 AM

CKKW signed on the air on July 30, 1959.^[3] It began as an AM station, broadcasting on 1320 kilocycles. It moved to 1090 AM in 1975, powered at 10,000 watts, using a directional antenna. For most of its time on the AM band, CKKW aired a full service, middle of the road format of adult popular music, news and sports. In February 1984, CKKW began broadcasting in AM stereo, using the Motorola C-Quam format.^[4]

CKKW was originally owned by Carl Pollock and later becoming a subsidiary of his company Electrohome. CHUM Limited acquired CKKW in 1993. On February 11, 1994, CKKW dropped their then-Top 40 format and flipped to oldies as Oldies 1090. This was maintained until 2009, except for a brief period from 2001 to 2002 when it was part of CHUM's short-lived sports radio network, The Team.

Move to FM

On April 10, 2008, CKKW applied to the Canadian Radio-television and Telecommunications Commission to convert the station to the FM band at 99.5 MHz.^[5] The application indicated that CKKW would keep its oldies format after the switch. The application was approved on October 3, 2008.^[6]

The flip, which occurred on January 6, 2009, resulted in a continuation of the oldies format as KFUN 99.5.^[7] Although the station was allowed to simulcast at 1090 AM until April 6 of that year, the AM signal was likely shut down on January 16. The old AM towers were taken down in March.^[8] CKKW later flipped to adult hits, but kept the same call sign and branding.

As part of a mass format reorganization by Bell Media, on May 18, 2021, CKKW rebranded as Bounce 99.5.^[9]