Whart is Coaxial Coxable in Networking || Advantages and Disadvantages of Coaxial Cable || Transmission Media ||

                     Coaxial Cable

#Summary - In today's blog we will learn about Coaxial Cable,Advantages and Disadvantages,& Types of Coaxial Cable.

#Coaxial Cable - Coaxial Cable consists of a solid copper core surrounded by an insulator mainly  made up of Poly Vinyl Chloride (PVC) or Teflon. It is a surrounded by a mesh like ground wire called the braiding or shielding and an outer cover know as a Sheath. 

The Insulator act as a barrier between the braiding and inner core. If the Insulator is absent, the shield and the core may come in contact and cause a short circuit.

The braiding protects the cable from external interference such as Electro Magnetic Interference (EMI) and Radio Frequency Interference.

Coaxial Cables are less prone to interference as Compared to twisted pair cables.

#The Various Parts of Coaxial cables are -

*Outer Insulation or Jacket - it is made up of Plenum (Teflon) or Nonplenum (polyethylene or Polyvinylcloride).

*Copper Mesh or Shields - Some Coaxial Cables have a braid shield, some have a foil shield, and others have both a braid and foil shields. These shields can supply ground for the carrier wire and help to protect the copper wire from EMI and RFI.

*Insulation - It is a Nonconductor (Dielectric) around the carrier wire. It is usually made up of Polyethylene or Teflon.

*Copper Wire or Carrier Wire - It is a wire conductor at the center of the cable and is made of Copper and may be either solid or stranded.

Note - IEEE Specifies Stranded Copper Wire with tin coating for thin coaxial cables and solid copper carrier wire of thick coaxial cable.

#Advantages of Coaxial Cables -

• Secured data Transmission
• Protected from Crosstalk
• Protection from EMI and RFI

#Disadvantages of Coaxial Cables -

• Most Expensive of all types of cables
• Difficult to install

#Types of Coaxial Cable -

*RG58 Cable (Thinnet/ Thinwire/ Cheaperent) - RG58 Cable is approximately 0.64 centimeter in diameter and is mainly used in networks in which the devices are frequently added or removed. The Thinwire Ethernet is also known as 10Base2 where 2 denotes the maximumsegment length of 200 (Practically 185) meter. 

*RG8 (Thickwire Ethernet/ Thicknet) - RG8 is approximately 1 centimeter in diameter and mainly used as backbone cable in Thicknet. Thickwire provides better protection from external and internal interference. It can also carry signals at great distances. The Thickwire Ethernet is also known as 10Base5 where 5 denotes the maximum segment length of 500 m.


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