The station was assigned the call sign KLVH on March 25, 1994;[4] it signed on in 1998.[1] Its call sign was changed to KOHO-FM on August 20, 1999;[4] the new name was derived from coho salmon.[5] The station was founded by the Icicle Broadcasting Corporation, owned by Harriet Bullitt, and primarily played adult alternative and jazz.[6][7]
On April 8, 2022, it was announced that the station would flip to Northwest Public Broadcasting's jazz network, based at KJEM, on April 19.[8] At midnight on April 19, KOHO-FM's stream went silent for several hours before beginning the simulcast with KJEM during the 9 am hour.
On December 21, 2023, the FCC license for KOHO was transferred to Northwest Public Broadcasting following a donation from the Sleeping Lady Foundation.[9]