broadcast licenses due to violations of the FCC's licensing rules and ethics violations. In hearings that began in June 1960, it was found that some of the principals of Biscayne Television, as well as some of James Cox's personal friends, had made improper contact with FCC commissioner Richard Mack in order to influence the awarding of the construction permit and licenses. Biscayne had competed for the license with two other applicants, East Coast Television and South Florida TV. Mack had also been found guilty of taking payoffs and was forced to resign by President Dwight D. Eisenhower, as well as the rest of the FCC commissioners. Biscayne Television originally planned to appeal its license revocation, but was advised that the appeal would be turned down due to the gravity of the situation. Mack had also been found guilty of taking payoffs in the licensing process of WPST, to the broadcasting subsidiary of National Airlines. WPST had its license revoked and Biscayne then opted to put WCKT up for sale. The owners of WPST were forced to sell the station only after they had to cease broadcasting. Sunbeam Television ownership Shortly afterward, a new company called Sunbeam Television Corporation bought the station for $3.4 million and assumed ownership of channel 7 on December 19, 1962. Upon the change in ownership, Sunbeam retained the WCKT call letters and claimed the Cox/Knight station's history as its own. Sunbeam was a partnership between Miami Beach–based real estate developer Sydney Ansin, and his son Edmund Ansin. The younger Ansin succeeded his father as president of Sunbeam Television in 1971. The station began using its own version of the circle 7 logo (which is moderately similar to the version originally created for ABC's owned-and-operated stations, but with the "7" not connected to the circle and being somewhat shaped differently) in the mid-1970s. On June 7, 1983, the station's callsign was changed to the current WSVN, after those call letters were acquired from a PBS satellite member station in Norton, Virginia (which subsequently became WSBN-TV; it went off the air in 2017). Network affiliation switch NBC experienced a resurgence in the second half of the 1980s, resulting in it becoming the top-rated U.S. television network–a status helped by the crime drama Miami Vice, which was set and filmed in and around Miami. The Miami–Fort Lauderdale area was also developing into one of the largest media markets in