|City of license||Trois-Rivières, Quebec|
|Slogan||"Vous le Savez Maintenant!"
("Now You Know!")
|Frequency||106.9 MHz (FM)|
|First air date||October 17, 1937|
|Format||talk radio (French)|
|Callsign meaning||disambiguation of sister station CKOI-FM|
|Former callsigns||CHLN (1937-2011)|
(591991 B.C. Ltd.)
Owned and operated by Cogeco, it broadcasts on 106.9 MHz using a directional antenna with an average effective radiated power of 60,000 watts and a peak effective radiated power of 100,000 watts (class C1). The station moved to the FM band on August 20, 2007 ; it was previously heard on the AM band, on 550 kHz, with a daytime power of 10,000 watts and a nighttime power of 5,000 watts as a class B station, using a directional antenna with slightly different daytime and nighttime directional patterns in order to protect various other stations on that frequency.
CKOB-FM went on the air as CHLN, an AM station on October 17, 1937, and was originally on 1420 kHz; it moved to 1450 kHz in 1941, and moved again to 550 kHz in 1945.
CHLN had one rebroadcaster, namely CKSM in Shawinigan. That station broadcast on 1220 kHz, with a daytime power of 10,000 watts and a nighttime power of 2,500 watts as a class B station, using a directional antenna with slightly different daytime and nighttime directional patterns in order to protect various other stations on that frequency. CKSM went on the air on April 29, 1951, and ceased to produce local programming on June 12, 1995. CKSM was not owned by Corus Entertainment as it was retained by Astral Media; it ceased to broadcast on June 30, 2007.
CHLN was authorized by the Canadian Radio-television and Telecommunications Commission (CRTC) to move to the FM band on November 24, 2006. Rebroadcaster CKSM was not affected by this decision.
In March 2009, then-owner Corus Entertainment announced plans to drop the talk radio format on Corus Québec outlets CHLN, CJRC-FM in Gatineau, CHLT-FM in Sherbrooke and CKRS-FM in Saguenay in favour of a classic hits-oldies format branded as "Souvenirs Garantis", effective on March 28, 2009.
On February 21 at 5:30 AM, CHLN-FM flipped to the Hot Adult Contemporary format and CKOI branding implemented by its Montreal sister station, CKOI-FM, as the station change its callsign to CKOB-FM.
On June 20, 2012, Cogeco announced that CKOB-FM, along with CKOF-FM and CKOY-FM, will revert to their talk formats on August 20, 2012, all but dismantling the CKOI network. Apart from an expansion of talk programming, no changes in current talk and sports programming are expected for these stations.
CKOB was a former call sign from an AM radio station, CKOB in Renfrew, Ontario in the 1970s through to the 1990s and the call sign was believed to be used previously as a radio station repeater in Obed Mine, Alberta.
- Bill Dulmage (2006-12-01). "CHLN-AM". Canadian Communications Foundation. Retrieved 2006-12-18.
- Astral Communications inc. (2000-01-14). "Notice annuelle -- Exercice terminé le 31 août 1999" (in French). Retrieved 2006-12-18.[dead link]
- CRTC (2006-11-24). "Broadcasting Decision CRTC 2006-638". Retrieved 2006-12-18.
- Francophone news-talk listeners across much of Quebec will be out of luck at month's end Scott Fybush/NERW, 2009-03-09
- Broadcasting Decision CRTC 2010-942: "Transfer of effective control of various commercial radio programming undertakings from Corus Entertainment Inc. to Cogeco inc.", issued December 17, 2010.
- Le Nouvelliste: "CHLN devient CKOI", February 14, 2011. (French)
- Per Industry Canada Broadcasting Database
- Fagstein: "Cogeco to convert three CKOI stations to talk radio", June 20, 2012.
- Cogeco press release: "COGECO Diffusion : expansion de son réseau parlé", June 20, 2012. (French)
- 106,9 FM
- CHLN-FM history at Canadian Communications Foundation
- Query the REC's Canadian station database for CKOB-FM
- Query the REC's Canadian station database for CHLN-FM