talk stations in North America to broadcast in stereo. 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...