The studios are located south of downtown Portland, and the transmitter site is in the city's northeast side along the Columbia River.

[9] In its history since returning in 1980, this frequency has aired numerous formats, including classical, oldies (as "Kissin' 910 from 1987 to 1989) and adult standards (as "Sunny 910" from 1989 to 1998).

The station dropped ESPN Deportes Radio on July 12, 2010 in favor of simulcasting the programming of KNRK-HD2, which airs music from local bands.

[12] On September 11, 2013, KKSN changed its call letters to KMTT as part of a warehousing move by Entercom.

[14] ** = Audacy operates pursuant to a local marketing agreement with Martz Communications Group.