Owned and operated by Société Radio-Canada, it broadcasts on 98.1 MHz with an effective radiated power of 96,700 watts (class C) using an omnidirectional antenna.

The station has an ad-free news/talk format and is part of the Ici Radio-Canada Première network, which operates across Canada.

The station's current local programs are Bonjour la côte, in the mornings from 6 a.m. to 9 a.m., and Boréale 138 in the afternoons, 3:30 p.m. to 6 p.m. CBSI-FM also co-produces D'Est en est, a pan-regional program produced in turn with CBGA-FM and CJBR-FM Rimouski, and heard afternoons during the summer months.

[3] In 1986, the CBC received CRTC approval to switch frequencies on a number of CBSI low-power AM rebroadcasters in Quebec.

[4] CBSI-FM-2 previously broadcast as CFKL, a local station owned by Hollinger-Ungava Transport Ltd. that operated at 1230 kHz.