The C connector is a type of

RF connector A coaxial RF connector (radio frequency connector) is an electrical connector designed to work at radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shieldin ...

used for terminating

coaxial cable Coaxial cable, or coax (pronounced ) is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric ( insulating material); many coaxial cables also have a p ...

. The interface specifications for the C and many other connectors are referenced in MIL-STD-348. The connector uses two-stud bayonet-type locks. The C connector was invented by Amphenol engineer

Carl Concelman Carl Concelman (December 23, 1912 – August 1975) was the electrical engineer who, while working for Amphenol, invented the C connector and teamed up with Paul Neill of Bell Labs to invent the BNC connector and TNC connector. See also *RF ...

. It is weatherproof without being overly bulky. The mating arrangement is similar to that of the

BNC connector The BNC connector (initialism of "Bayonet Neill–Concelman") is a miniature quick connect/disconnect radio frequency connector used for coaxial cable. It is designed to maintain the same characteristic impedance of the cable, with 50 ohm and 7 ...

. Keith B. Schaub, Joe Kelly, ''Production Testing of RF and System-on-a-chip Devices for Wireless Communications'', Artech House, 2004, page 230 It can be used up to 11 GHz, and is rated for up to 1500 volts.

References

RF connectors {{electrical-connector-stub