WKTU (103.5 FM) is a rhythmic adult contemporary formatted radio station licensed to Lake Success, New York, a suburb of New York City. WKTU is owned by iHeartMedia and broadcasts from studios in the former AT&T Building in the Tribeca neighborhood of Manhattan; its transmitter is located at the Empire State Building. History WGLI-FM–WTFM (1958–1982) In 1958, 103.5 MHz was assigned to Babylon, New York for WGLI-FM, simulcasting sister station WGLI 1290AM. William Reuman, the founder and owner of WWRL in New York City, was the owner of WGLI. 103.5 MHz had previously been assigned to WPAT-FM in Paterson, New Jersey, which went on the air as WNNJ in 1949, and was deleted in early 1951. In March 1960, Friendly Frost Inc. (a Long Island-based appliance store chain) acquired WGLI Inc. from Reuman and his partners. In November 1961, Friendly Frost moved the station from Babylon to Lake Success, and the call sign was changed to WTFM. WTFM transmitted with 20 kW from a 200-foot tower outside the studio building at 173-15 Horace Harding Expressway visible from the Long Island Expressway. Eventually, the transmitter was relocated to the Chrysler Building, and a major signal boost was accomplished. As WTFM, the station used the slogan "The International Stereo Sound of New York," and played an instrumental-based easy listening format. Initially, it was strictly instrumental versions of pop standards, however by 1969, the station began playing soft instrumental versions of rock and roll baby boomer pop songs as well as standards. The station was eventually sold to Sydney Horne, and the company became known as WTFM, Inc. By 1971, the station began playing soft vocalists once every 15 minutes including soft songs by rock artists and standards artists. They kept this format until 1977, the reason being as an easy listening station, WTFM was up against similar stations: WRFM, WVNJ-FM, and WPAT AM & FM, that had higher ratings. As a result, the station switched to a soft rock-leaning adult contemporary format. The station would at some points be more of an AC format, while at other points more of a mellow rock format. Ultimately, ratings continued to remain low with the new format. WTFM was put up for sale in 1980, and Heftel Broadcasting made a proposal to buy the station from Sydney Horne. The plan was to switch WTFM to an album rock format, but the sale was never consummated.