The station's initial country music competitors in Chicago were 670 WMAQ, 104.3 WJEZ, and 1160 WJJD, which switched to the adult standards Music of Your Life format within weeks of "US-99"'s debut. In years when the station lacked major local competition, it has ranked as the nation's most-listened-to country station."America Online Launches Leading Infinity Broadcasting Stations Online on Radio@AOL and Radio@AOL for Broadband ", Business Wire. December 10, 2003. Retrieved September 7, 2018."The Best Program Directors in Country Radio ", Radio Ink. February 16, 2015. p. CRS18. Retrieved September 7, 2018.
