 In June 1951, the WABD antenna was moved to the top of the Empire State Building, consolidating all New York television stations at one location.In 1958, WKCR-FM, the radio station of Columbia University, began transmitting from the former WABD antenna atop the building, remaining there until 1977, when it became the first radio (or television) station to transmit from the antenna atop the World Trade Center, the move necessitated by the construction of other surrounding skyscrapers which started interfering with the station's signal.In 1962, the building was sold to Newmark & Co. which still owns and manages it.