 CHRF's studios were located on Papineau Avenue in the Rosemont–La Petite-Patrie borough of Montreal, while its transmitter is located near Mercier.Between its sign-on in 1959 until 1990, AM 980 in Montreal was the home of CKGM, for many of those years, Montreal's leading English-language Top 40 station.Then from 1990 until 2012, CKGM was heard at AM 990, so it could broadcast at 50,000 watts fulltime, the maximum power permitted for Canadian AM stations.