KUOM

KUOM (770 AM) – branded Radio K – is a daytime-only, non-commercial educational college/alternative rock radio station licensed to serve Minneapolis, Minnesota. Owned by the University of Minnesota, Twin Cities, the station is operated by both faculty and students. Studios are located at the Rarig Center on the University of Minnesota campus.

KUOM's AM signal operates with a non-directional antenna located on the St. Paul/Falcon Heights campus. Due to its low frequency of 770 kHz, combined with the region's flat terrain and excellent soil conductivity, the station's AM coverage is comparable to that of a full-power FM station. Its signal can be heard throughout the Twin Cities area, with grade B coverage in St. Cloud and Mankato. However, the AM operation is licensed to broadcast only during daylight hours, in order to protect WABC in New York City at night. Therefore, its hours of operation vary from month to month, reflecting local sunrise and sunset times, with the day's sign on and signoff changing from month to month; signoff, for example, ranges from 4:30 p.m. in winter to 9:00 p.m. in summer. KUOM extends its reach, and adds nighttime service, with two FM translators and one limited-reach FM station that allow KUOM's programming to be heard 24 hours a day. KUOM is also available online.

The university traces its radio activities back more than 100 years, starting with experimental work in 1912, followed by radiotelegraph broadcasts begun in 1920, and radiotelephone broadcasts of market reports inaugurated in February 1921. KUOM's first license as a broadcasting station, originally WLB, was granted on January 13, 1922. This was Minnesota's first broadcasting station, making KUOM one of the oldest surviving radio stations in North America.