WKTU (103.5 FM, "KTU") is a radio station based in New York City that plays a Rhythmic contemporary format. The station's broadcast transmitter is located on the top of the Empire State Building and its city of license is Lake Success, New York, with offices formerly in the "Newport" section of Jersey City, New Jersey. As of February 2008, the studios and offices were moved to the AT&T Building in the TriBeCa section of Manhattan along with sister stations WHTZ, WWPR-FM, WAXQ, and WLTW.