KDKA (1020 kHz AM) is a Class A (clear channel) radio station, owned and operated by Entercom and licensed to Pittsburgh, Pennsylvania. Its studios are located at the combined Entercom 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 KDKA-FM's 93.7 HD2 digital subchannel - wikipedia

Circa 1921 photograph an early transmission room used by radio station KDKA. Original caption: "Still another radio-phone broadcasting station, showing the announcer and the receiving operators. This is KDKA of East Pittsburgh, Pa., the forerunner of all the other radio-phone broadcasting stations in the United States."
- wikimedia.org
KDKA features a News/Talk format. Operating with a transmitter power output of 50,000 watts, the station can be heard during daylight hours throughout central and western Pennsylvania, along with portions of the adjacent states of Ohio, West Virginia and New York, plus the Canadian province of Ontario. Its nighttime signal covers much of eastern North America.

Photograph of radio station KDKA studio. Original caption: "New KDKA Studio Recently Opened at Main Works of the Westinghouse Electric & Mfg. Co., East Pittsburgh, Pa."
- wikimedia.org
KDKA has described itself as the "Pioneer Broadcasting Station of the World", and traces its beginning — initially using the temporarily assigned "special amateur" call sign of 8ZZ — to its broadcast of the 1920 Harding-Cox presidential election results on the evening of November 2, 1920.

Interior of the KDKA “radio shack,” constructed atop the Westinghouse building in Pittsburgh, Pennsylvania, October 1920 - britannica.com
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