WNDX (93.9 MHz) is a commercial FM radio station, licensed to Lawrence, Indiana, and serving the Indianapolis metropolitan area. It is owned by Cumulus Media and airs a mainstream rock radio format, using the moniker 93-9X. The studios and offices are located on North Shadeland Avenue on the east side of Indianapolis. WNDX's transmitter is located off 38th Street, also on the east side of Indianapolis. It is licensed by the Federal Communications Commission to broadcast in the HD (hybrid) format.