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CFYI

CFMJ
Talk Radio AM640.png
City Richmond Hill, Ontario
Broadcast area Greater Toronto Area
Branding Talk Radio AM640
Slogan It's time to talk about it.
Frequency 640 kHz (AM)
Repeater(s) 95.3 CING-FM-HD2
First air date 1957
Format sports, talk
Power 50 kW
Class B
Callsign meaning C F MoJo (former station name)
Former callsigns CJRH, CFGM, CHOG, CFYI
Former frequencies 1300 AM (1957-1959)
1310 AM (1959-1978)
1320 AM (1978-1988)
Owner Corus Entertainment
(Corus Premium Television Ltd.)
Sister stations Radio: CFNY-FM, CILQ-FM, CING-FM
TV: CIII-DT
Website globalnews.ca/radio/640toronto

CFMJ is a Canadian radio station, broadcasting at 640 kHz on the AM dial. It is licensed to Richmond Hill, Ontario, but the studio is in the Corus Quay building at 125 Queens Quay East in Toronto. The station airs a talk radio and sports format targeted to the entire Greater Toronto Area.

CFMJ transmits with an eight-tower directional antenna; although it is a Toronto market station that is licensed to a suburb to the north of the city, its transmitter is in the town of Lincoln, in Niagara Region, near the southeast corner of Greenlane and Merritt Road. This location allows the station's 50,000–watt signal to cover a large part of Southern Ontario beyond Greater Toronto, as well as western New York state during the day and at night.

The station began in 1957 under the callsign CJRH, at AM 1300. It moved to 1310 in 1959, and changed its call letters to CFGM in 1961. The station adopted a country music format in 1964; a few years later, they became Canada's first 24-hour country station. Don Daynard was a notable host with the station in the 1960s.

The station moved to 1320 in 1978, and to 640 on September 16, 1988.

On June 29, 1990, at 5 PM, the station changed its format and call letters, broadcasting a rock-leaning CHR/Top 40 format as 640 The Hog, CHOG (which would later shift towards a more mainstream direction in September 1991). In June 1992, the station rebranded as AM 640: The Beat Of Toronto, and adjusted its playlist to a more rhythmic lean. Several notable radio personalities were associated with the station during this era, including John Gallagher, Tarzan Dan, Pat Cochrane, Kenny 'The Hitman' Caughlin, Roger Kelly and the Toronto radio team of Jesse and Gene. After CFTR moved from contemporary hits to all-news in 1993, AM 640 (still with the calls CHOG) was the last Top 40 station in Toronto proper (and the very last AM station in the area to broadcast Top 40 hits) until CISS adopted the format in February 1999. Talk shows came to take up a substantial part of the station's schedule, particularly during midday periods when many of the station's hit music listeners might normally be in school.


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