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City of license Ames, Iowa
Broadcast area Central Iowa
Frequency 90.1 MHz
First air date December 1, 1949
Format News, Adult Alternative
ERP 100,000 watts
HAAT 454 meters
Class C
Facility ID 29118
Callsign meaning from sister station WOI
Affiliations NPR, American Public Media
Owner Iowa State University
Sister stations WOI (AM)
Webcast [1]
Website Iowa Public Radio

WOI-FM (90.1 FM) is a radio station licensed to Ames, serving the greater Ames/Des Moines area. The station is owned by Iowa State University. WOI-FM is an affiliate of Iowa Public Radio, and is the flagship of IPR's "News and Studio One" service--a mix of National Public Radio news programming and adult alternative music.

WOI-FM first hit the airwaves on December 1, 1949. Like most FM stations of the time, it was originally a full-time simulcast of WOI (AM). The two stations went their separate ways in the 1960s.

Until the formation of Iowa Public Radio in 2004, WOI-FM was the flagship station for a mini-network of FM stations in central Iowa, including KWOI in Carroll and KTPR in Fort Dodge.

Shortly after midnight on September 10, 2012, the decades old classical music and news format of WOI-FM was changed by IPR to their News and Studio One service. The classical service moved to WOI-FM's second digital subcarrier. For those without HD Radio, the classical continues to be heard in portions of central Iowa on other frequencies.

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