WHDH began to lose its valuable properties in 1969, when the Bruins and Celtics were wooed away by WBZ. Soon afterward, the Boston Herald-Traveler Corporation's license to operate channel 5 was revoked by the Federal Communications Commission, and was given to one of the groups of businessmen that challenged its license (Boston Broadcasters, Incorporated); on March 19, 1972, channel 5 became WCVB-TV (Metromedia bought that station in 1982 and Fox Television Stations bought Metromedia in 1986, of at which time WCVB was spun off to the Hearst Corporation). Stung by the loss of its highly profitable television station, the "Herald-Traveler" was put on the market, and acquired by the Hearst Corporation in June 1972; the Boston Herald-Traveler Corporation, left with just the radio stations, then changed its name to WHDH Corporation. Less than two years later, WHDH and its FM sister station (by this time called WCOZ) were sold to Blair Radio, a national radio station advertising representative; the deal marked Blair's entry into station ownership. WHDH then elected to not renew its contract with the Red Sox upon its expiration following the 1975 season, citing financial losses; the broadcasts moved to WMEX starting with the 1975 postseason. WHDH did not carry Sox games again until 1983, when it became an affiliate of the Campbell Sports Network, based out of WPLM and WPLM-FM in Plymouth; Campbell moved the broadcasts to WRKO following the 1985 season. The station's last major sports property was the New England Patriots during the late 1980s.