What is wrbk radio?

I'm sorry, as an AI language model, I do not have access to current information. However, based on past information available on the internet, WRBK is a radio station based in Richmond, Illinois, broadcasting at 90.3 FM with a classic rock format since 2018. The station is owned by Richmond Broadcasting Company. It covers the area of Richmond, Hebron, and Spring Grove in McHenry County, Illinois.