| WOI-FM | |
| City: | Ames, Iowa |
| Area: | Central Iowa |
| Branding: | IPR News and Studio One |
| Format: | News |
| Subchannels: | HD2: KSUI simulcast (Classical music) |
| Erp: | 100,000 watts |
| Haat: | 454m (1,490feet) |
| Class: | C |
| Facility Id: | 29118 |
| Coordinates: | 41.8092°N -93.615°W |
| Callsign Meaning: | from sister station WOI |
| Affiliations: | NPR, American Public Media |
| Owner: | Iowa Public Radio, Inc. |
| Sister Stations: | WOI (AM) |
| Website: | Iowa Public Radio |
| Licensing Authority: | FCC |
WOI-FM (90.1 FM) is a radio station licensed to Ames, Iowa, serving the greater Ames/Des Moines area. The station is owned by Iowa Public Radio. WOI-FM carries 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. It was originally a full-time simulcast of WOI. 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.
For most of the time since the formation of NPR, WOI-FM aired a mix of classical music and NPR news and talk programming, simulcasting many programs with its AM sister. Shortly after midnight on September 10, 2012, IPR switched WOI-FM's format to the News and Studio One service. The classical service moved to WOI-FM's second digital subcarrier. For those without HD Radio, classical music continues to be heard in portions of central Iowa on five full-power stations that between them cover most of the region.
WOI-FM broadcasts two digital channels in the HD Radio (hybrid) format.[1]