AM 660 is an American clear channel frequency, so CFFR uses a directional antenna with a three-tower array to protect other stations from interference.

Later, the CFFR call letters were used for "Calgary Flames Radio", representing the NHL hockey team in town.

[4] The announcement of 66 CFR leaving the air was accompanied by the closing chord of the Beatles' "A Day in the Life", which had also been the first sound heard at the start of the production piece introducing the station.

As of winter 2020, CFFR is the 11th-most-listened-to radio station in the Calgary market according to a PPM data report released by Numeris.

[5] In June 2021, Rogers announced that it would rebrand CFFR and its other all-news and news/talk radio stations under the CityNews brand.

Late nights, CFFR joins with CFTR Toronto, CKWX Vancouver and CJNI-FM Halifax in airing a national all-news radio service.