What is Coax or Coaxial cable ?
A Coaxial cable is a cable, is used in the transmission of audios, videos and communications. Coaxial cables are also called COAX in networking language. Mainly coaxial cables are used as network and broadband cable. These cables have high bandwidth and greater transmission capacity. The adjacent figure is of a commonly used coaxial cable. As shown in the figure these cables have a metal male connector end that is screwed onto a female connector.
Types of Coaxial cables :
- Thicknet ( 10Base5)
- Thinnet (10Base2)
*Thicknet, also known as Thick Ethernet or 10Base5
*Thinnet, also known as Thin Ethernet or 10Base2
Above mentioned both technologies use coax that consists of solid copper core surrounded by an insulator. 10Base2 is known as cheaper net, thin Ethernet, thinnet and thinwire which is a variant of Ethernet that uses thin Coaxial cable, terminated with BNC connectors. Here 10Base2 means
- 10 Mbps speed.
- Baseband signals
- 200 meters length (actual usage is 185 meters)
And, 10Base5 is known as Thick Ethernet or thicknet that was the first commercially available variant of Ethernet. Here 10Base5 means,
- 10 Mbps speed
- Baseband signals
- 500 meters length.
Understanding the Thinnet and Thicknet concepts:
The number 10 – At the front of each identifier, 10 denotes the standard data transfer speed over these media – ten megabits per second (10 Mbps)
The word Base – Short of Baseband, this part of the identifier signifies a type or network that uses only one carrier frequently for signalling and requires all network stations to share its use.
The Segment length – This part of the identifier can be a digit or a letter,
Digit – Shorthand for how long (in meters) a cable segment may be before attenuation sets in. for example, a 10Base5 segment can be no more than 500 meters long.
Letter – Identifies a specific physical type of cable. For example, the T at the end of 10BaseT stands for Twisted-pair.
Advantages of Coaxial cables:
- coaxial cable is used in high frequency because of its skin and copper material.
- It is less costly.
- Attenuation and shield effectiveness is better in Coaxial cable.
- It supports high bandwidth signal transmission.
- Easy to expand.
Disadvantages of Coaxial cables :
- It is expensive for long distance.
- Case of failure in network is high due to uses of single cable.