The station was sold in the early 1970s and is now WUSN. McDonald), which was among the earliest FM multiplex stereo stations, first broadcasting in stereo in June 1961. Zenith established one of the first FM stations in the country in 1940 (Chicago's WWZR, later called WEFM, named for Zenith executive Eugene F. Bent Piano Company of Chicago as early as 1906. For many years Zenith used the slogan 'the quality goes in before the name goes on'. The company is credited with having invented such things as the wireless remote control and FM multiplex stereo. The first Zenith television set appeared in 1939, with its first commercial sets sold to the public in 1948. It added automobile radios in the 1930s with its Model 460, promoting the fact that it needed no separate generator or battery, selling at US$59.95. Zenith introduced the first portable radio in 1924, the first mass-produced AC radio in 1926, and push-button tuning in 1927. The fledgling company soon became known for its high-quality radios and electronic innovations. McDonald, and Zenith Radio Company was formally incorporated in 1923.

The name 'Zenith' came from ZN'th, a contraction of its founders' ham radio call sign, 9ZN. The company was co-founded by Ralph Matthews and Karl Hassel in Chicago, Illinois, as Chicago Radio Labs in 1918 as a small producer of amateur radio equipment. Zenith-branded products were sold in North America, Germany, Thailand (to 1983), Cambodia, Laos, Vietnam, India, and Myanmar.

Zenith was the inventor of subscription television and the modern remote control, and was the first to develop high-definition television (HDTV) in North America. LG Electronics acquired a controlling share of Zenith in 1995 Zenith became a wholly owned subsidiary in 1999. For many years, their famous slogan was 'The quality goes in before the name goes on'. After a series of layoffs, the consolidated headquarters moved to Lincolnshire, Illinois.

Zenith was previously an American brand of consumer electronics, a manufacturer of radio and television receivers and other consumer electronics, and was headquartered in Glenview, Illinois. It is owned by the South Korean company LG Electronics. Zenith Electronics, LLC, is an American research and development company that develops ATSC and digital rights management technologies.

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