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
Harry P. Davis, Westinghouse vice president and founder of KDKA
Photograph of the 9th floor KDKA transmission room. c. 1921
As part of ongoing facility upgrades, this well-appointed studio went into service on December 18, 1922.
KCBS is an all-news AM radio station located in San Francisco, California. It is owned by Audacy, Inc., which took over after its merger with CBS Radio.
Charles Herrold's San Jose California radio laboratory, circa 1912. Herrold is standing in the doorway.
1959 advertisement for KCBS promoting the station's 50th anniversary and claiming the title of "the first radio broadcasting station in the world". Pictured are Charles D. Herrold and his assistant Ray Newby, circa 1910.