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 Northwoods Broadcasting, a subsidiary of 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. In 2003, the station's owners, Big Pond Communications, applied to the CRTC to increase the station's signal to 15,000 watts, on the grounds that with a signal that could not adequately reach some parts of the city, the station was economically not viable.