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KDKA (AM)
KDKA (1020 kHz) is a Class A clear-channel radio station licensed in Pittsburgh, Pennsylvania. Created by the Westinghouse Electric Corporation on November 2, 1920, it is the world's first commercial radio station, a distinction that has also been challenged by other stations, although it has claimed to be the "world's first ''commercially licensed'' radio station": WWJ in Detroit, Michigan (also a CBS Radio station), lists its "First Air Date" as August 20, 1920. KDKA is currently owned and operated by CBS Radio, with studios located at the combined CBS Radio Pittsburgh facility on Foster Drive in Green Tree and transmitter in Allison Park. It is one of six stations east of the Mississippi River whose callsign starts with a K.
KDKA can be heard in the HD Radio format.〔http://www.hdradio.com/station_guides/widget.php?id=56〕
==Overview==
KDKA operates on a clear channel and broadcasts a news/talk radio format. News and spoken word programming has been a central feature of its programming from its beginning. The station's 50 kilowatt signal can be heard throughout central and western Pennsylvania, along with portions of Ohio, West Virginia, Maryland, New York, Virginia and Kentucky, and the Canadian province of Ontario during the day. At night, it reaches much of the eastern half of North America.
KDKA enjoys grandfathered status as one of six remaining stations east of the Mississippi River that have call letters beginning with ''K''. Three of them are in Pittsburgh, the other two being KDKA-FM (KDKA's sister station) and KQV, as well as KDKA's longtime sister station KYW in Philadelphia (though the KYW callsign has in the past been used in Chicago and Cleveland); KFIZ in Fond du Lac, Wisconsin; and KTGG Spring Arbor, Michigan (though in that instance, it was due to a clerical error at the FCC).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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