In the United States, KDKA of Pittsburgh starts broadcasting as the first commercial radio station. The first broadcast is the result of the 1920 United States presidential election.

KDKA is a class A, clear channel, AM radio station, licensed to Pittsburgh, Pennsylvania. Owned and operated by Audacy, Inc. and the market affiliate for ABC News Radio, Its radio studios are located at the combined Audacy Pittsburgh facility in the Foster Plaza on Holiday Drive in Green Tree, and its transmitter site is at Allison Park. The station's programming is also carried over 93.7 KDKA-FM's HD2 digital subchannel, and is simulcast on FM translator W261AX at 100.1 MHz.