From 1971 to July, 1990 WLKE had an FM sister station at 99.3 FM, first known as WLKE-FM, which broadcast an in-house beautiful music format from 1971 to 1976. Then later the call letters were changed to WGGQ (99Q). 99Q was an automated station and played Drake-Chenault top-40 rock format "XT-40" using reel to reel tapes from 1976 to 1981. The call letters were changed back to WLKE-FM from August 1981 to May 1984 and an automated country music was aired. Then in May 1984, the WGGQ call letters were brought back and 99Q was once again back on the air using S.M.N.'s All Hit Radio format (later renamed "The Heat" ) until July 1990.
The AM and FM then had separate ownership after July 1990, and 99.3 moved to 99.5 MHz and changed its city of license from Waupun to Ripon and later to Omro, Wisconsin. The current call letters for 99.5 are WPKR.