I haven't forgotten Radiofan's research challenge -
29 July 1961 - The Board of Broadcast Governors announced that on 21 August 1961, a hearing would be held in Ottawa to review a number of applications including a request "[f]or a change in the day-time radiation pattern of Station CFCW, Camrose, Alta., by Camrose Broadcasting Company Limited, with the authorised power of 10,000 watts on the assigned frequency of 790 Kc/s, DA-2."
The hunt for the date of the actual sign-on at 790 continues. Stay tuned.