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What are the common applications for coaxial cables?

2021-03-11

What are the common applications for coaxial cables?

 

 

Coaxial cable ("coax" for short) is generally considered to be only used for broadband video and cable television (CATV) home applications, but in commercial enterprise environments, from closed circuit television (CCTV), audio and video to radio frequency antennas, and even Some network connections can be found in it. Therefore, it is very necessary to understand this cable medium and how to test it.

 

Main type

 

There are many different types of coaxial cables that support a wide range of professional applications, such as satellite communications, industrial, military, and marine applications. The three most common types of non-industrial coaxial cables are RG6, RG11, and RG59, of which RG6 is most commonly used in applications such as CCTV and CATV in corporate environments. The center conductor of RG11 is thicker than RG6, which means that its insertion loss is lower and the signal transmission distance is longer. However, thicker RG11 cables are more costly and very difficult to bend, which makes them unsuitable for deployment in indoor applications, but more suitable for long-distance outdoor installations or straight backbone links. RG59 is more flexible than RG6, but its loss is higher. It is rarely used in other applications except for low-bandwidth, low-frequency analog video applications (rear-view cameras in automobiles) with short distances and limited wiring space.

 

The digital signal 3 (DS3) signal used in the central office (also known as T3 line) transmission service also uses coaxial cables, including 75 Ω 735 type and 734 type. The 735 type cable has a coverage distance of up to 69 meters, while the 734 type cable has a coverage distance of up to 137 meters. RG6 cable can also be used to transmit DS3 signals, but the coverage distance is shorter.

 

 

 


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