 The WPWR-SportsVision partnership struggled by January 1984 and as a result, the channel was sold to the Bethpage, New York-based Cablevision Systems Corporation, which later converted SportsVision into a basic cable service.In 1989, the channel became an affiliate of the SportsChannel America group of regional sports networks, relaunching as SportsChannel Chicago.On June 30, 1997, News Corporation and Liberty Media—which had created a new group of regional sports networks known as Fox Sports Net in November 1996—purchased a 40% interest in Cablevision's sports properties.