Before going on the air September 7, 1957,[1] the station was given call letters KOYL, a nod to the importance of oil in the Permian Basin economy.
A 1981 Book of Texas Lists would feature KOYL and fellow Odessa station KRIG, both named for the oil industry.
[4] KOYL's air staff as a country music station over the years included Bill Myrick,[4] and guest disc jockeys Waylon Jennings and Johnny Dollar.
Rodriquez, the owner of Odessa's Pan American Ballroom,[9] immediately changed KOYL to a Spanish-language format.
[10] One of the reasons Rodriquez bought KOYL was because the existing Spanish-language station in town, KJJT, was co-owned with a competing venue and tended to ignore entertainers performing at the Pan American.