cfmi first signed on in early 1970. over the years, the station added fm transmitters in most of british columbia. on july 26, 2011, cfmi-fm received canadian radio-television and telecommunications commission (crtc) approval by increasing new westminister's transmitter to the average effective radiated power (erp) from 37,000 to 53,000 watts (maximum erp from 75,000 to 100,000 watts), by decreasing the effective height of antenna above average terrain from 686 to 386.4 meters and by relocating its transmitter.