 The station switched frequencies again to 780 AM in 1937 and increased power to 250 watts the following year.In 1940, Pilling acquired half-ownership of the station, which changed over to 1340 AM in 1941.The original CBC Radio became known as the Trans-Canada Network on January 2, 1944, when its new sister network, the Dominion Network, went on the air, and CHWK became a charter affiliate of the Dominion Network at that time.