The C connector is a type of connector that used to terminate a coaxial cable. It is often used in the audio and video industries. The connector uses two-stud bayonet-type locks. The C connector was invented by Amphenol engineer Carl Concelman. It is weatherproof without being overly bulky. The mating arrangement is similar to that of the BNC connector. It can be used up to 11 GHz and is rated for up to 1500 volts.