KRTK (93.3 MHz) is a commercial FM radio station licensed to Hermann, Missouri, and broadcasting to the western suburbs of Greater St. Louis.
In 1996, the station completed an upgrade to a Class C2 facility, giving it a signal covering a wide area of Eastern and Central Missouri.
In 2011, KQQX received authorization from the Federal Communications Commission (FCC) to change the station's city of license from Steelville to Hermann and move the tower closer to the St. Louis Metropolitan area.
The station also was a pioneer under Randy Wachter's ownership with webcasting a live feed online via Real Audio, of which KNSX was among the top 10 most-listened-to webstreams in 1997–1998.
KLUQ was in receivership after being repossessed from Twenty One Sound Communications, which was wholly owned by Randy Wachter, who founded the station.