The station is owned by Alpha Media, LLC, along with KEEZ, KYSM-FM and KMKO-FM.

In later years, the FM station aired an adult contemporary format, with a heavy focus on its hometown of St. Peter.

After increasing power from 3,000 to 25,000 watts, improving its signal into Mankato and other nearby cities, KRBI-FM flipped to a more regionally focused classic rock format as "River 105" on September 12, 2000.

On May 1, 2012 KRBI-FM changed their format from classic hits to adult contemporary, still branded as "105.5 The River".

As of 2018 KRBI-FM has flipped back to classic hits, the station slightly rebranded as "River 105".