CBX, the Canadian Broadcast Corporation (CBC) outlet in Edmonton started out on 1010 kHz in 1948. On 1 October 1964, CBX moved to 740 and CBR Calgary assumed the use of 1010. Currently, CBX is rebroadcast on several FM outlets throughout northern Alberta.
CBX would boom into Spokane in the 1970’s when conditions favored to the north. I sent a reception report off in 1977 and they responded with the QSL card below.