By early 1923, the "Daily News" was convinced enough in the power of radio to buy out the Fair Store's 51% interest in the station. The Daily News moved the station and its transmitter to the tallest building in Chicago at the time—the La Salle Hotel on West Washington street in the West Loop. With a new location and new frequency of 670 kilohertz, WMAQ went on the air July 2, 1923. The new frequency however, was not at first clear channel. WMAQ had to share its schedule with another local station, WQJ, which was jointly owned by the Calumet Baking Powder Company and the Rainbo Gardens Ballroom on North Clark Street. Rainbo was one of the country's top ballrooms and Calumet's broadcasts brought the company much publicity for its products. The Daily News was not able to buy out WQJ until 1927 to make the 670 frequency exclusively available for WMAQ.