The station was established in 1947 as Silver Spring-based WOOK, the first station of Richard Eaton's United Broadcasting with African American programming.[3] Four years later, Eaton bought WINX, a station in Washington, D.C. proper. In order to retain both stations and meet multiple ownership rules, the Silver Spring station license was relocated to Rockville, Maryland—which under pre-1950 Census Bureau guidelines was not part of the Washington metropolitan area—on 1600 kHz. Additionally, Eaton switched the two stations' call letters, resulting in WOOK as the new 1340 in Washington, D.C., and WINX as the station at 1600 in Rockville.[4]
Through to the late 1970s, WINX broadcast a Top-40 format. It was located at 8 Baltimore Road off Church Street near the intersection of Veirs Mill Road and Rockville Pike. It was consistently the third-ranked Top 40 station in the ratings, following WPGC and WEAM. The station shifted to an oldies format in March 1993 (simulcast on FM 94.3 in Warrenton, Virginia), then followed by a short stint as top-40 again around 1998, in the FM-dominated market. During the 1990s, WINX was the flagship for American University Athletics; Chuck Timanus served as lead play-by-play announcer, with his blind son Eddie Timanus, later a famous game show contestant and sportswriter, serving as a statistician.[5]
In December 1998, it was sold to Mega, then Multicultural. At that time, it converted to Spanish-language programming. The station was assigned the call sign WLXE in 2003.