KBLE (1050 AM) is a radio station broadcasting a religious radio format licensed and serving the Seattle/Puget Sound area. The station was originally licensed to Kirkland. The station signed on in 1948 as KRKL; in 1953, the station switched its call sign to KNBX. In 1963, it changed call sign to KNBK; then, in 1964, it switched to the current KBLE and was relicensed to Seattle. In the same year, the station launched an FM simulcasting counterpart, located at 93.3 FM. That station was sold in 1981, and is now KPWK. The station is currently owned by Sacred Heart Radio.