On September 22, 1988, at 5:30 p.m., WQHT would change frequencies, as Emmis acquired NBC's radio stations. Since Federal Communications Commission regulations at the time required that a company could only own one FM radio station in a market, Emmis sold the 103.5 frequency to Westwood One (which, coincidentally, had also acquired the remnants of the NBC Radio Network). At the same time, they moved the format at 103.5 FM to the 97.1 FM frequency which they acquired from NBC, with WQHT becoming "Hot 97." As a result, WYNY, which was running a country music format at the 97.1 frequency prior to the sale, would move to 103.5 FM.