The BNC connector (Bayonet NeillConcelman) is a miniature quick connect/disconnect RF connector used for coaxial cable. It features two bayonet lugs on the female connector; mating is achieved with only a quarter turn of the coupling nut. BNCs are ideally suited for cable termination for miniature-to-subminiature coaxial cable (e.g., RG-58, 59, to RG-179, RG-316). They are used with radio, television, and other radio-frequency electronicequipment, test instruments, video signals, and was once a popular connector for 10BASE2 computer networks. BNC connectors are made to match thecharacteristic impedance of cable at either 50 ohms or 75 ohms. It is usually applied for frequencies below 3 GHz [1] and voltages below 500 Volts.[2]Similar connectors using the bayonet connection principle exist, and a threaded connector is also available. United States military standard MIL-PRF-39012 entitled Connectors, Coaxial, Radio Frequency, General Specification for (formerly MIL-C-39012) covers the general requirements and tests for radio frequency connectors used with flexible cables and certain other types of coaxial transmission lines in military, aerospace, and spaceflight
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