KPBX-FM is a public radio station serving Spokane, Washington. It broadcasts at 91.1 MHz with an ERP of 56,000 watts and is one of three stations operated by Spokane Public Radio. KSFC and KPBZ are the others.Through seven full-power repeaters and six translators, it reaches 70,000 listeners in eastern Washington, northeastern Oregon, northern Idaho, western Montana and southern British Columbia.