The station equipment was moved to a small studio on Palmer's Brady Street campus. WOC initially broadcast on the common Entertainment wavelength of 360 meters (833 kilohertz), and on October 14 was authorized to also broadcast weather reports on 485 meters (619 kilohertz). In October it was upgraded to a state-of-the-art 500 watt Western Electric transmitter, which allowed WOC to move to the more exclusive "Class B" wavelength of 400 meters (750 kilohertz). In May 1923, 620 kilohertz was reserved as a Class B frequency assignment for qualified stations in "Davenport/Des Moines, Iowa", and WOC was authorized to move to this new frequency.