CHDI-FM (102.9 FM, Sonic 102.9) is a radio station in Edmonton, Alberta. Owned by Rogers Sports & Media, it broadcasts a modern rock format. Its studios are co-located with its sister stations on Gateway Boulevard. As of Feb 28, 2021, CHDI is the 8th-most-listened-to radio station in the Edmonton market according to a PPM data report released by Numeris.