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640 AM - The following radio stations broadcast on AM frequency 640 kHz:[1] 640 AM is a North American clear-channel frequency.[2] KFI in Los Angeles, California, KYUK in Bethel, Alaska, and CBN in St. John's, Newfoundland and Labrador, share Class A status of 640 AM.
- ^ "AM Query Results".
- ^ "AM Station Classes, and Clear, Regional, and Local Channels". Federal Communications Commission. 2015-12-11. Retrieved 2020-11-25.