On October 26, 1984, the station first signed on in Raymond, Washington.[4] The first call sign was KSWW. It was originally a Class A FM station, powered at only 230 watts, a fraction of its current output. It was owned by Pacific Broadcasting Company and had an adult contemporary format.
In 1997, it was bought by Jodesha Broadcasting, Inc., for $182,400.[5] The call letters switched to KFMY, and it began airing a classic rock format as "Eagle 97.7".[6] It later was granted a power boost and increase in its antenna height, allowing it to be heard in the more lucrative Seattle-Tacoma radio market.
In May 2009, while still owned by South Sound Broadcasting, the station began simulcasting KOMO, with Fisher Communications operating 97.7 FM under a local marketing agreement.[7] On May 18, 2009, the call letters changed to KOMO-FM. In June 2017, the outright sale of the station to the Sinclair Broadcast Group (which had acquired Fisher several years earlier) for $6.75 million was announced.[8] The sale received Federal Communications Commission (FCC) approval several years later, and was consummated on June 9, 2020.[7]
On June 3, 2021, Sinclair announced they would sell KOMO-AM-FM, KVI, and KPLZ-FM to Lotus Communications for $18 million. Of the $18 million, $5 million was in cash paid at closing; the remainder was Lotus' choice of either cash or advertising for Sinclair properties on Lotus' stations. Sinclair retained KOMO-TV, as well as rights to the KOMO call letters. Lotus and Sinclair also agreed to allow Lotus to use Sinclair equipment and IT systems, including sub-leasing the current KOMO studios, for 18 months following the sale.[9] The sale was completed on September 28, 2021.[10] As required by the terms of the sale, the KOMO radio stations changed their call signs to KNWN on February 2, 2022, in conjunction with a rebranding as "Northwest News Radio"; during the week preceding the relaunch, competitor KIRO-FM preemptively began promoting itself as "Your Northwest News Station".[11]
Translators
KNWN-FM is also carried on the following booster and FM translator stations to improve reception of the station: