1957 - Toronto's CHUM-AM, (1050 kHz) becomes Canada's first radio station to broadcast only top 40 Rock n' Roll music format. ....
THE MOST COMPREHENSIVE 1050 CHUM AND CHUM LTD TIMELINE TO BE FOUND THUS FAR ONLINE.
LINK: Canadian Communications Foundation - Fondation Des Communications ...
Ontario, City of Toronto
CHUM-AM, Toronto, CTVglobemedia
1944....
1945
CHUM Radio began broadcasting on October 28. The daytime only station operated on a frequency of 1050 kHz with a power of 1,000 watts. Studios and offices were on the top floor of the Hermant Building at 21 Dundas Square. ...
Dick MacDougal was CHUM's first announcer and program director.
1946 ...
In the spring, a fire in the Hermant Building’s basement forced CHUM off the air for a time. Phone service was lost and the program feed from the studios to the transmitter site was cut. Station staff jumped into action and set up a temporary studio at the transmitter building. Programming resumed the following day from the temporary studio location. .. Complete Article @ Canadian Communications Foundation - Fondation Des Communications ...
http://www.broadcasting-history.ca/index3.php?url=http%3A//www.broadcasting-history.ca/listings_and_histories/radio/histories.php%3Fid%3D407%26historyID%3D188
EARLY CHUM HISTORY: CHUM (AM)
Link to another good site with info about CHUM: [Medianews] The history of CHUM