CBN (640 kHz) is a public AM radio station in St. John's, Newfoundland and Labrador, Canada. It carries a news, talk and information format and is the local Radio One station of the Canadian Broadcasting Corporation. CBN programming is also heard in St. John's on CBN-1-FM at 88.5 MHz. For listeners who have trouble picking up CBN 640's signal clearly in the downtown area, this "nested rebroadcaster" provides an alternative. CBN-1-FM has an effective radiated power (ERP) of 3,162 watts. This station is not to be confused with CBN-FM at 106.9 MHz, which carries the CBC Music network.