Understanding the Technology of a BNC Cable


BNC Cable

BNC Cable

By Anne Ahira

The BNC cable is type of connector that is referred to as “RF”. It is typically used to terminate the use of a basic cable that is identified as “coaxial”.

This particular type of cable is also referred to as “Bayonet Neill-Concelman”. It is used for connections for signals that implement the use of the RF frequency.



This type of cable is also compatible with signals that are analog and even those that are based on the “Serial Digital Interface” technology for video. The BNC cable is commonly used in antenna connections that help to broadcast amateur radio, and electronics that are used in aviation.

Many use the BNC cable in order to avoid having to use a standard RCA connector. This is especially true when it comes to video devices that are commercial based. In addition to this, there are consumer based electronics that can implement the use of the BNC cable successfully.

The connectors that are included on this type of cable were once used commonly on Ethernet based networks that implemented the use of 10base2. While most often found on cable interconnections, this type of cable has also been located on actual network cards.

When it comes to the availability of BNC cable, you will typically find them in versions that are identified as “50ohms” and “75ohms”. Each of these unique specifications are usually incorporated to provide frequencies of both 2GHz as well as 4GHz.

In order to identify the BNC cable that is 75ohms, you will find at the ends of the cable that there is a reduction in the amount of dielectric. In some instances, a 75ohm BNC cable will not have any dielectric at all.

The reason that this is needed is so that each of the ends of the cable may successfully match up with one another. Many refer to this as “mating”.

A 75ohm BNC cable is typically used to assist in applications that are considered to be “Central Office”. This type of cable could be used in video and it could also be used in what is referred to as “DS3 Telco”.

The 50ohm BNC cable is typically used in processing data and interpreting RF signals. This particular cable was developed by two different inventors.

The first was Paul Neill. This man worked at a company called Bell Labs. The second individual was Carl Concelman. He worked at a company called Amphenol as an engineer. He created the connector that is identified as “C” and Paul created the connector that is identified as “N”.

The BNC cable did not receive its name simply due to the names of the inventors, though. It also acquired its identification because of the fact that it has a specific mechanism that allows it to lock appropriately. The lock is referred to as a “Bayonet Mount”.

The actual connector that is part of the BNC cable was established by a man of the name Octavio M. Salati. This individual actually filed the official patent for the connector in the year of 1945 for the BNC cable.

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