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The following radio stations broadcast on AM frequency 680 kHz:[1] 680 AM is a North American clear-channel frequency.[2] KNBR and KBRW share Class A status on 680 kHz. WRKO, WPTF, CJOB and CFTR also broadcast on 680 kHz, with 50,000 watts at all times, but are class B.
- ^ "AM Query Results".
- ^ "AM Station Classes, and Clear, Regional, and Local Channels". Federal Communications Commission. 2015-12-11. Retrieved 2020-11-25.