|City of license||Sydney, Nova Scotia|
|Broadcast area||Cape Breton Island|
|Branding||CBC Radio One|
|Frequency||1140 kHz (AM)|
|First air date||November 1, 1948|
|Callsign meaning||Cape Breton Island|
|Owner||Canadian Broadcasting Corporation|
|Sister stations||CBI-FM, CBIT (TV)|
|Website||CBC Nova Scotia|
CBI is a Canadian radio station. It is the CBC Radio One affiliate in Sydney, Nova Scotia, broadcasting at 1140 kHz on the AM dial. The station serves all of Cape Breton Island by operating a network of FM rebroadcasters.
CBI was launched on November 1, 1948, at AM 1570. Prior to its launch, CBC Radio programming was aired by private affiliate CJCB 1270 and its shortwave relay CJCX-SW 6010 kHz (in the 49 m band). In 1954, CBI moved to AM 1140.
On July 9, 2007, CBI was given approval by the Canadian Radio-television and Telecommunications Commission (CRTC) to convert the station to the FM band at 97.1 MHz under the calls of CBIT-FM and shut down the AM transmitter. In a license renewal submission to the CRTC in June 2011, CBC stated that it did not have the resources to implement the transmitter before the authorization lapsed.
The station's local programs are Information Morning in the mornings and Main Street in the afternoons. Although both programs have the same name as mainland counterpart CBHA in Halifax, they are distinct programs produced in Sydney.
CBIT has the following rebroadcasters:
- CBIB-FM - Bay St. Lawrence - 90.1 at
- CBIC-FM - Cheticamp - 107.1 at
- CBHF-FM - Northeast Margaree - 93.9  at
- CBHI-FM - Inverness - 94.3  at
- CBC Nova Scotia
- CBI history at Canadian Communications Foundation
- Query the REC's Canadian station database for CBIT-FM
- Query the REC's Canadian station database for CBI
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