Owned and operated by network parent Bell Media, the station has a transmitter in Blacketts Lake southwest of the city.

CJCB-DT is part of the CTV Atlantic regional system in the Maritimes, carrying the same programming as sister station CJCH-DT at all times, except for some commercials and an annual telethon.

CJCB-TV was the first television station to broadcast in Nova Scotia, when it signed on for the first time on October 9, 1954, beating CBHT-TV in Halifax by two months.

It joined the Trans Canada Microwave network on July 1, 1958, linking all CBC stations between Sydney to British Columbia.

[3] Prior to the microwave connection, programming was either from live local studio productions or kinescope 16mm film copies of CBC network shows.

[2] CHUM Limited, owner of CJCH-TV, bought CJCB-TV in 1971 and applied to the Canadian Radio-television and Telecommunications Commission (CRTC) to switch it to the CTV network.

CJCB's monopoly was reaffirmed in a CRTC decision in 1985 that denied a CBIT request to enter that part of the market.

[18] The current 190-metre-tall (623 ft) digital transmitter tower is located at 345 McMillan Road, in Blacketts Lake, southwest of Sydney.

Bell went through many rounds of layoffs in January and February 2024, and that caused CTV Sydney to lose reporter Kyle Moore.

Bell Media's rationale for deleting these analog repeaters was they were costly to operate and maintain; they did not generate much revenue; and viewers mostly had direct-to-home satellite subscriptions that carried these same signals.

[30] On July 30, 2019, Bell Media was granted permission to close down an additional transmitter as part of Broadcasting Decision CRTC 2019-268.