WRKU (102.1 FM, "U102.1") is a radio station broadcasting a hot adult contemporary format. Licensed to Forestville, Wisconsin, United States, the station serves Door and Kewaunee counties. The station is currently owned by Bryan Mazur, through licensee Mazur, LLC.
In September 2021, WRKU rebranded as "U102.1".WRKU Relaunches As U102.1 Radioinsight - October 14, 2021
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