Wheeler indicated that he planned to address local marketing and shared services agreements in the future. The change in stance also prompted changes to then-proposed acquisitions by Gray Television and Sinclair Broadcast Group, who, rather than use sharing agreements to control them, moved their existing programming and network affiliations to digital subchannels of existing company-owned stations in the market, or a low-power station (which are not subject to ownership caps), and then relinquished control over the original stations by selling their licenses to third-parties, such as minority-owned broadcasters  Due to the FCC's limits on station ownership at the time (which prevented the common ownership of multiple radio stations), local marketing agreements in radio, in which a smaller station would sell its entire airtime to a third-party in time-buy, were widespread between the 1970s and early 1990s. These alliances gave larger broadcasters a way to expand their reach, and smaller broadcasters a means of obtaining a stable stream of revenue. In 1992, the FCC began allowing broadcasting companies to own multiple radio stations in a single market. Following these changes, local marketing agreements largely fell out of favor for radio, as it was now possible for broadcasters to simply buy another station outright rather than lease it – consequentially triggering a wave of mass consolidation in the radio industry. However, broadcasters still used local marketing agreements to help transition acquired stations to their new owners. The first local marketing agreement in North American television was formed in 1991, when the Sinclair Broadcast Group purchased Fox affiliate WPGH-TV in Pittsburgh, Pennsylvania. As Sinclair had already owned independent station WPTT (now MyNetworkTV affiliate WPNT) in that market, which would have violated FCC rules which at the time had prohibited television station duopolies, Sinclair decided to sell the lower-rated WPTT to the station's manager Eddie Edwards, but continued to operate the station through an LMA (Sinclair eventually repurchased the station – then assigned the call letters WCWB – outright in 2000, after the Federal Communications Commission began permitting common ownership of two television stations in the same market, creating a legal duopoly). Sinclair's use of local marketing agreements would lead to legal issues in 1999, when Glencairn, Ltd. (since restructured as Cunningham Broadcasting) announced that it would acquire Fox affiliate KOKH-TV in Oklahoma City, Oklahoma from Sullivan Broadcasting; Glencairn subsequently announced plans to sell five of its 11 existing stations that were operated by Sinclair under LMAs to that company outright.