KUNI's transmitter is in Walker, Iowa, with its primary signal covering Cedar Falls, Waterloo, Cedar Rapids and Iowa City.
KUNI's programming is simulcast on full-power satellite KNSM (91.5 FM) in Mason City.
It is the flagship of IPR's "News and Studio One" service, which combines NPR news and talk programming with an extension of the "Live from Studio One" adult album alternative program that aired on KUNI for years before the creation of IPR.
Announcer Bob Dorr had been involved with the station since 1972, producing programs of classic rock and roll recordings and live concerts featuring Iowa talent.
Dorr retired from full-time broadcasting in 2009 but plans to produce occasional shows in the future.