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BNC cables are always required when working with an oscilloscope or other measuring devices. Oscilloscopes, frequency generators, spectrum analyzers and many more devices have BNC outputs. BNC cables are also very popular in the video sector.

BNC stands for Bayonet Neill Concelman, named after the inventors of these connectors. BNC are connectors for coaxial cables with a kind of bayonet lock. The cables are well suited for frequencies up to approx. 1 GHz. At higher frequencies you go to higher impedances and can thus also transmit up to 4 GHz. The cables consist of an inner conductor, also called centre core. Then follows a layer of insulation, then the outer conductor and protective sheath.

There are two common types of BNC cable: 50 ohm and 75 ohm. The 50 ohm cables are used in the oscilloscope range, the 75 ohm variant mainly for video technology. In the video and television sector, the coax cables are also often used with the so-called Belling-Lee connector (antenna connection on the TV). This is not compatible with oscilloscopes and is only useful in the TV sector.

On this page we present the most popular BNC cables. For oscilloscopes and gauges, you need to choose BNC cables with 50 ohm impedance. All measuring instruments are tuned to these values. In the video area, 75 ohm impedance is common, so you have to grab 75 ohm cables there. Both variants are presented below.

Buy BNC Kabel - Cheap BNC cables in test:

50 ohm cable:

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75 ohm cable:

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