CJUK-FM is a Canadian radio station, broadcasting at 99.9 FM in Thunder Bay, Ontario. The station broadcasts a hot adult contemporary/adult CHR format with the brand name Magic 99.9. The station is owned by Acadia Broadcasting.The station was first licensed as a low-power station by the CRTC in 2000, and launched in August 2001 with an ERP of just 37 watts.