KYSX

KYSX is a commercial radio station licensed to Billings, Montana, United States, broadcasting on 105.1 FM. It was owned by BMG Billings, LLC, but is now owned by Radio Billings, LLC.
Prior to December 2, 2008, it was an adult hits station known as "Bill FM". It was launched on May 15, 1998 as adult album alternative Classic Hits 105-1 KBEX. It later changed to the rock format, first as 105-1 The Blitz, then as 105.1 The End in 2003 under the new call letters KNDZ. It switched to KQBL "105-1 Bill FM" on August 26, 2005, and later became Billings' Sports Station "ESPN 105.1". On March 4, 2011 KQBL changed its call letters to KYSX. On March 21, 2011, the station changed its format from ESPN Radio to classic rock, branded as "105 The X". The station was labeled as 105 the X, and features no local DJs, just classic rock music all day long. The station's name was modeled after KRKX-FM's old nickname "The X" when KRKX-FM was Billings's Classic rock station prior to its current country format.

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