CKSO-FM was a Christian music station, which broadcast at 101.1 on the FM dial.
On September 5, 2001, a group led by David Jackson was given approval to operate a new Christian music FM radio station at 101.1 FM. According to an interview with the community newspaper Northern Life, Jackson chose the CKSO call letters because of their historical significance in the Sudbury area; in addition to the original CKSO-FM, the call sign was also once used by an AM radio station (now CJRQ) and a television station (now CICI) in the city.
On October 8, 2002, the group asked for and was granted an extension to the deadline to commence operations. The station began airing test transmissions on December 2, 2002.
Although the station's website remained accessible until early 2009, the Canadian Communications Foundation website reports that the station left the air in 2006. The licence, when issued, was to expire on August 31, 2008 — as of that date, however, no renewal application had been filed with the CRTC.