CKAC is a French-language Canadian radio station located in Montreal, Quebec, broadcasting a traffic information format as Radio Circulation 730.The station broadcasts on 730 kHz on the AM band with a power of 50,000 watts as a clear channel (class A) station, using a two-tower, slightly directional antenna pointing east (towards Montreal) with the same pattern day and night.CKAC is owned and operated by Cogeco.