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BNC (Bayonet Neill-Concelman) connector
A type of RF connector used for terminating coaxial cable. The BNC connector is used for RF signal connections, both for analog and Serial Digital Interface video signals, amateur radio antenna connections, aviation electronics (avionics) and on nearly every piece of electronic test equipment manufactured in the last 35 or so years. This connector is an alternative to the RCA connector when used for composite video on commercial video devices, however many consumer electronics with RCA jacks can be used with BNC-only commercial video equipment via a simple adaptor. BNC connectors were commonly used on 10base2 thin Ethernet networks, both on cable interconnections and network cards, though these have largely been replaced by newer Ethernet devices whose wiring does not use coaxial cable. Some ARCNET networks use BNC terminated coax