The station has an ad-free news/talkformat and is part of the Première Chaîne network, which operates across Canada. Like all Première Chaîne stations, but unlike most FM stations, it broadcasts in mono.
The station signed on in 1977 as a full-time rebroadcaster of CBF in Montreal. Before then, Radio-Canada programming had aired on private affiliate CHLN. However, despite Trois-Rivières' large size, the CBC opted not to open a full-fledged station in the city. It became a separately licenced station in 2000, while retaining a rebroadcaster-like callsign. However, for all intents and purposes, the station is a CBF semi-satellite. It has its own morning drive show (Chez nous le matin, Monday to Friday from 6 to 9 a.m.) and simulcasts CBF at all other times.
CBF-FM-8 was originally on 100.1 MHz, and moved to 88.1 MHz in 1985. It moved to its current frequency in late 2003.