|Broadcast area||Southwestern Ontario|
|Slogan||Stratford's Greatest Hits|
|Frequency||1240 kHz (AM)
(approved to relocate to 107.1 MHz (FM))
|First air date||1928|
|ERP||(FM: 900 watts (maximum ERP 4,000 watts))|
The station, known as "10AK" began broadcasting in 1928 as an amateur station at 250 metres. In 1933, the station changed to 1200 kHz, moved to 1210 kHz in 1936 and then moved to its present frequency at 1240 kHz on March 29, 1941. 10AK switched to its present callsign CJCS in 1935.
Over the years since the station began broadcasting in 1928, CJCS went through a number of different ownerships.
On June 25, 1997, Raedio Inc., received approval from the Canadian Radio-television and Telecommunications Commission to acquire CJCS from Telemedia Communications.
On April 23, 2012 Vista Broadcast Group, which owns a number of radio stations in western Canada, announced a deal to acquire Haliburton Broadcasting, in cooperation with Westerkirk Capital. The transaction was approved by the CRTC on October 19, 2012.
On January 23, 2015, Vista applied with the CRTC to convert CJCS from AM 1240 kHz to the FM band, at 107.1 MHz with an average effective radiated power (ERP) of 900 watts (maximum ERP of 4,000 watts with an effective height of antenna above average terrain of 32.6 metres). The application was approved on August 10, 2015. 
- Decision CRTC 90-441, CJCS Stratford - Conversion to FM band (denied), CRTC, May 11, 1990
- Decision CRTC 97-272, Acquisition of assets, CRTC, June 25, 1997
- "Haliburton Broadcasting Group Inc. buys three Ontario radio stations". Canadian Press, September 17, 2010.
- Broadcasting Decision CRTC 2011-110
- "Westerkirk Capital Acquires Vista and Haliburton Broadcast Groups". Broadcaster, April 26, 2012.
- Broadcasting Decision CRTC 2012-577 Various radio programming undertakings – Acquisition of assets, CRTC, October 19, 2012
- Broadcasting Decision 2015-365, CJCS Stratford - Conversion to the FM band, CRTC, August 10, 2015
- CJCS 1240
- CJCS history - Canadian Communications Foundation
- Query the REC's Canadian station database for CJCS