a transmitter sold by his company. The first station to receive a commercial license was WBZ, then in Springfield, Massachusetts. Lists provided to the Boston Globe by the U.S. Department of Commerce showed that WBZ received its commercial license on 15 September 1921; another Westinghouse station, WJZ, then in Newark, New Jersey, received its commercial license on November 7, the same day as KDKA did. What separates WJZ and WBZ from KDKA is the fact that neither of the former stations remain in their original city of license, whereas KDKA has remained in Pittsburgh for its entire existence. 2XG: Launched by Lee de Forest in the Highbridge section of New York City, that station began daily broadcasts in 1916. Like most experimental radio stations, however, it had to go off the air when the U.S. entered World War I in 1917, and did not return to the air. 1XE: Launched by Harold J. Power in Medford, Massachusetts, 1XE was an experimental station that started broadcasting in 1917. It had to go off the air during World War I, but started up again after the war, and began regular voice and music broadcasts in 1919. However, the station did not receive its commercial license, becoming WGI, until 1922. WWV, the U.S. Government time service, which was believed to have started 6 months before KDKA in Washington, D.C. but in 1966 was transferred to Ft. Collins, Colorado. WRUC, the Wireless Radio Union College, located on Union College in Schenectady, New York; was launched as W2XQ KQV, one of Pittsburgh's five original AM stations, signed on as amateur station "8ZAE" on November 19, 1919, but did not receive a commercial license until January 9, 1922. See also Histories History of electrical engineering History of electromagnetic theory History of electromagnetic spectrum History of amateur radio History of broadcasting History of physics History of radar History of science and technology History of telecommunication History of television History of videotelephony General A.S. Popov Central Museum of Communications Birth of public radio broadcasting Digital audio broadcasting (DAB) Digital Radio Mondiale Internet radio List of old-time radio people Personal area networks Radio Act of 1912 Radio Act of 1927 Radio minstrel Spark-gap transmitter Timeline of radio Timeline of the introduction of radio in countries Wireless Wireless LANs Wireless Ship Act of 1910 Many contributed to wireless. Individuals that helped to further the science include, among others: Georg von