Definition: N.B.: The term "BNC" was first introduced in 1975 to denote a type of cable which has one end (A) for the transmission signal, and another (B) for a receiver. It is now widely used in home networking as well as in commercial applications, but is still sometimes called a "Cat B" or "Cat 6" cable. The term "BNC" stands for "Broadcast Network Cable", which refers to the type of cable which carries audio and video signals over radio frequencies, specifically on the shortwave (SW) frequency band. This type of cable typically comes in two sizes: A120 and B120, which are commonly used by amateur radio operators. The term "BNC" is also used to refer to a type of cable that carries telephone signals over long distances, particularly for data transmission purposes such as internet connections or voice mail. This type of cable is often referred to as an "unshielded Twisted Pair (UTP)" cable. It's worth noting that the term "BNC" can also have other meanings depending on the context it appears in, and there are many variations of the term across different regions and industries.
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