The classic country format continues on sister station 1510 WQQW in Highland, Illinois.
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By the early 1980s, WIL-FM was affirmed as the top country-music station in town, and 1430 AM was split off from their FM sister station to start a classic country format, which it kept until 1989 when the station switched to an adult standards format with the call letters WRTH, which were on the air with the same format for many years at 590 AM in Wood River, Illinois (now KFNS AM).