KRBI-FM

{{Use mdy dates|date=January 2025}}

{{one source|date=June 2024}}

{{Infobox radio station

| name = KRBI-FM

| logo = 180px

| city = St. Peter, Minnesota

| area = Mankato, Minnesota

| branding = River 105

| frequency = 105.5 MHz

| airdate = 1966

| format = Classic hits

| erp = 25,000 watts

| haat = {{convert|67.6|m|ft|0|abbr=on}}

| class = C3

| facility_id = 31873

| callsign_meaning =

| former_callsigns =

| owner = Alpha Media

| licensee = Alpha 3E Licensee LLC

| sister_stations = KEEZ-FM, KMKO-FM, KYSM-FM

| webcast = {{listen live|https://www.river105.com}}

| website = [https://www.river105.com/ river105.com]

| licensing_authority= FCC

}}

KRBI-FM (105.5 FM, "River 105") is an American radio station licensed to serve the community of St. Peter, Minnesota and broadcasting to the Mankato area and the Minnesota River Valley. It currently airs a classic hits music format.

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

From 1966 until 2000, KRBI-FM simulcast with its AM sister at 1310 AM. 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.[https://www.northpine.com/broadcast/archive/news092k.html Broadcasting News-September 2000] The St. Peter-oriented programming shifted to its AM sister, KRBI 1310 AM.

KRBI-FM switched its moniker to "The Buzzard" in April 2006.

On January 4, 2010, KRBI-FM changed their format to classic hits, branded as "105.5 The River".

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, and slightly rebranded as "River 105".

In June 2024, KRBI began airing Westwood One's "Classic Hits" format full-time as a result of staffing cuts initiated across many of Alpha Media's stations nationwide, including in Mankato.[https://radioinsight.com/headlines/269522/alpha-media-continues-to-purge-programming-on-air-staffs-in-midwest-markets/ Alpha Media Continues to Purge Programming, On-Air Staffs in Midwest Markets]https://www.keyc.com/2024/05/22/alpha-media-group-lays-off-mankato-on-air-talent/[https://www.westwoodone.com/formats/music/classic-hits/ Classic Hits | Westwood One]