The first nineteen Washington radio stations were born in the fiscal year ending June 30, 1922. This includes KJR, KTW, KMO Tacoma, and KGY Olympia. Louis Wasmer started up KHQ in Seattle, later putting his gear on the back of his motorbike and moving it to Spokane. KDZE Seattle later became KFOA and eventually KOL.
Note the call letters KGB, which existed in Tacoma for a few years, before going dark. The call letters were snagged by a radio station in San Diego.
See also Oldest Northwest Radio Stations and Puget Sound Radio Stations 1926 & 1927
KFAB 1110? Was listenable in N Tacoma at night.
KFAB Omaha was listenable in Kalispell when I lived there. KFC was the first chicken rock station. I wonder if KGN became KGON Oregon City, which I heard in Seattle.