Radio CKCU, The Mighty 93.1 (Ottawa's communitystation)

CKCU-FM is a Canadian community-based campus radio station, broadcasting at 93.1 FM in Ottawa, and offering a live Real Audio stream and MP3 stream from its website. The station broadcasts 24 hours per day, 365 days per year.

CKCU was Canada's first community-based campus radio station. It first broadcast on November 14, 1975 when it played Joni Mitchell's "You Turn Me On, I'm a Radio".

Often dubbed the mighty 93.1 by devotees, CKCU has a freeform format that allows the hosts to pick all the music played, and has many cultural/community programmes. The schedule includes both general and specialty music programs, public affairs and spoken word programming, and features many shows with a topical or international flavour. Some shows feature live in-studio performances by local artists. CKCU actively supports, sponsors and promotes local independent musicians, venues, concerts and festivals including the CKCU Ottawa Folk Festival.

The listener-supported station has an annual funding drive in late October and early November, to raise one-third of its annual operating budget. In 2006, this raised over $108,000 (unofficial total as of November 5, 2006). In recent years the funding drive regularly raised over $100 000 towards the station's budget of just over $300 000 per year. A further $100,000 is raised from university student levies, with the balance is supplied by advertisers and sponsors. The station self-produces much of the advertising material it carries, giving the advertising a campus flavour popular with listeners.

Each March break and several times during the summer, CKCU runs a unique Radio Camp for kids ages 9–12. The camp has been growing in popularity since 2003 and features a live two-hour kids broadcast.