KDKA is a radio station
Radio station
Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both...

 licensed to Pittsburgh, Pennsylvania, USA
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Created by the Westinghouse Electric Corporation
Westinghouse Electric (1886)
Westinghouse Electric was an American manufacturing company. It was founded in 1886 as Westinghouse Electric Company and later renamed Westinghouse Electric Corporation by George Westinghouse. The company purchased CBS in 1995 and became CBS Corporation in 1997...

 on November 2, 1920, it is one of the world's first modern radio stations http://www.reagan.utexas.edu/dtSearch/dtisapi6.dll?cmd=getdoc&DocId=6025&Index=*efd0fee5343905cffa0f0158ab4a751e&HitCount=2&hits=263+297+&SearchForm=F%3a\Reagan_Public_Web\search\speeches\speech_srch_form.htmlhttp://www.reagan.utexas.edu/dtSearch/dtisapi6.dll?cmd=getdoc&DocId=6404&Index=*efd0fee5343905cffa0f0158ab4a751e&HitCount=2&hits=50a+54d+&SearchForm=F%3a\Reagan_Public_Web\search\speeches\speech_srch_form.htmlhttp://www.presidency.ucsb.edu/ws/index.php?pid=46441&st=pittsburgh&st1=#axzz1Y6b3dQSz, a distinction that has also been challenged by other stations, although it has claimed to be the first in the world to be "commercially licensed".