Owned and operated by Leclerc Communication, it broadcasts on 91.9 MHz using a directional antenna with an average effective radiated power of 13,910 watts and a peak effective radiated power of 31,000 watts (class C1).

Until May 2012, it was also a part of Cogeco's adult contemporary Rythme FM network of stations across much of Quebec.

On April 30, 2010, then-owner Cogeco announced it would purchase Corus Quebec's radio stations.

However, on May 21, 2012 at 12 Midnight, Leclerc dropped the Rythme FM branding and adult contemporary programming from CJEC-FM, and began to identify itself as Le 91,9 FM Québec, playing a selection of hot adult contemporary music without use of personalities—the station was relaunched as WKND 91.9 (pronounced on-air as Weekend Radio 91.9) on June 20, 2012, at 6PM.

In April 2020, Leclerc acquired Montreal classical station CJPX-FM, which previously simulcasted CJEC-FM's competitor, CJSQ-FM; in June of that year, that station would flip to an adult contemporary format as WKND 99.5,[8] breaking off the simulcast with CJSQ-FM.