Named after its inventors Paul Neil and Carl Concelman, Bayonet Neil-Concelman (BNC) Connectors gained popularity in high frequency communication applications soon after they were invented. Categorized in terms of their impedance, these connectors keep signals intact and are resistant to signal attenuation. One of the most common known applications of these connectors is in Cathode Ray Oscilloscope or CROs. A CRO distinctly prefers such connectors in order to be interfaced with any device.Apart from various test equipments, these connectors are used in aviation electronics, video interfacing and radio connections. They are usually used for frequencies less than 3GHz.  Made up of alloy (preferably steel), these connectors have a tough structure but a quite simple functioning.