WBAP began broadcasting May 2, 1922 at a wavelength of 360 meters (about 833 kHz), changing to 400 meters (750 kHz) in August 1922. The station shared time with Dallas stations WFAA and WRR. It was the first station in the United States to have an audible logo signal similar to the NBC chimes, the WBAP cowbell. According to President Herbert Hoover, the station's call letters stood for "We Bring A Program," although in reality, the call letters were assigned sequentially, without any special meaning.