| Broadcast area | Central Iowa |
|---|---|
| Frequency | 90.1 MHz (HD Radio) |
| Branding | IPR News and Studio One |
| Programming | |
| Format | News; adult alternative |
| Subchannels | HD2: KSUI simulcast (Classical music) |
| Affiliations | NPR, American Public Media |
| Ownership | |
| Owner | Iowa Public Radio, Inc. |
| WOI (AM) | |
| History | |
First air date | December 1, 1949 |
Call sign meaning | from sister station WOI |
| Technical information[1] | |
Licensing authority | FCC |
| Facility ID | 29118 |
| Class | C |
| ERP | 100,000 watts |
| HAAT | 454 meters (1,490 ft) |
Transmitter coordinates | 41°48′33″N 93°36′54″W / 41.80917°N 93.61500°W |
| Translator(s) | 104.7 MHz K284CN (Ames) |
| Links | |
Public license information | |
| Webcast | Listen live |
| Website | Iowa Public Radio |
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.