The City of Chicago also operated its own radio station with similar call letters, WBU, sharing a frequency with Westinghouse's KYW, which began in Chicago the year before. In an attempt to avoid confusion with the city's station, WGU was assigned the new call letters WMAQ, and to improve reception, its power was increased to 500 watts and it was assigned the clear channel frequency of 750 kilocycles. WMAQ's call letters were first broadcast October 2, 1922, with the inaugural show featuring comedian Ed Wynn. The station's longtime motto "We Must Answer Questions," was derived from this call sign.