What is Repeater in Networking
Basic Networking

What is Repeater in Networking

Repeater is a network device that retransmits the Data from the sender to the receiver side of the network. The Incoming data can be in the form of wireless, electrical signals, and optical signals. The Repeaters transfers the data through a Large area distance. The Repeaters ensures the security and quality of the data and retransmits the Data by securely preserving the signals. For the longer distance data transmission, the Repeaters are used without compromising the security and quality of data.

What the Repeater is? How it can retransmit the data for longer distance communication. It is a device that directly plugs into the outlets. The Plugs should be placed perfectly where the Wi-Fi signals are strong. To connect to the Wi-Fi Connection the login credentials are entered and can connect to the network in the Repeater.

How it provides Internet access signals? After entering the login credentials, the Repeater connects to the Wi-Fi network. These signals are supports from the outside to generate Strong signals. We can also direct the signals to the weak signal locations with the help of the antennas.

Before you use the Repeater, Check the speed improvement of your repeater by examining at a needy location area.

Many people use the repeater because it is simple to connect. It strengthens the signals by directing them to different locations. The repeaters cannot provide the isolation to generate the traffic signals from one location to the other locations. The main use of implementing is it boosts the signals at the weakest locations.

The Repeaters can only operate in the Physical Layers. The data is getting retransmitted before the signal goes weak.

How Repeater is different from the hubs, routers, and switches?

Normally, in the case of the switches or routers. The signals are strong when we are near to the router and weak when the user is far away from the network. This leads to the sorrow of the Router user. Similarly, for a wired communication equal signals are generated for a certain distance. There is a limitation of a certain distance in the wired communication. Suppose we use the wired user computer with a wired connection. The data can be transmitted with the range of the distance between the two users and the server-side.

But, it is different in the case of the Repeaters, the repeaters direct the signals where there is weak internet access. This helps many individuals to utilize the Network access perfectly.

How Does the Repeater Works?

As we have mentioned, the repeaters are the network devices that retransmit the data and directs the signals for weak network access locations. The Data transmission and receiving of the data have different frequencies for both sender and receiver sides. The Repeater works when the sender’s frequency and the receiver’s frequencies are matched.

Let us take an example to understand in detail about the Repeators

Many of you may have heard about the term Walkie Talkie. Walkie Talkie has a simple connection. The data can be transmitted without any congestions or error to the receiver. The data can be transferred only if there are no obstacles in the middle of the transmission. Let go in deep to understand the concept in detail. Suppose a person interacts with the other person by using a one to one communication device like a walkie talkie. The data can be successfully transmitted if there is a clear path between the distance. The data cannot be delivered perfectly if there is a mountain or hill in between the distance.

So in order to avoid this situation, an Antenna is placed in between the two devices. This Device retransmits the data to the receiver side and leads the signals to the weak areas. This is called the main functioning of the repeater.

let us know how the repeater system works. The data transmitted from a sender to the receptor is called an uplink while the receptor that retransmits the same data in the downward direction and is sent to the receiver is called a downlink. But these repeaters can also be used where there are no mountains or hills in the Way. We see reports as extremely powerful radios.

We have many portable repeaters that are more powerful than the mobile devices of the 25 Watt. These repeaters are located at fixed geographical locations. The range of these routers is mainly 50 to the 100-watt range and there are some of the cable connectors that connect to the repeaters at a fixed location to buildings towers or at the top of home buildings.

Due to the presence of the repeaters, all mobile devices or portable devices, access the wide range of communication with equal communication signals in all directions. These receptors extend a wide range of communication for larger area locations.

So all the Repeated are together get connection to provide a range of communication for a wide area that extends the range of communications.

Let us understand the process of the repeaters at the two different networks and how the repeater processes at the two different locations.

In the below figure the Diagram represents the different user computers are connected to a switch or a router. similarly, the other side of the network is also connected to the LAN connection with the repeater in the middle of the two devices.

When the data is sent from Network A, the signal gets weak when it reaches the destination network and hence Data is not delivered properly.

So the Repeater is placed in between the two networks. The Signals received from Network A is taken by the repeater and sends the same signals with the same strength as those received from Network B.

Let’s take another example to understand the concept of the receiver. The below diagram is the process diagram of the repeater.

How does repeater work

Let us assume the distance between the computers and the repeater in the middle is 200 meters distance as the 10 Base-2. So When the data is sent from Network A, the signals that are weak move to the repeater device. and this repeater regenerates the strength of the signals. This repeater doesn’t filter the data received from the sender side. And During the transmission of the data, the n collisions have occurred when n number of devices are connected to it.

Types of the Repeaters :

Let us know the types of repeaters in detail.

Telephone Repeater

Telephonic Repeater

Telephone networks are used for long-range communications. An amplifier is maintained that consists of the transistors to increase the power. This telephone network is the bidirectional communication system that the data is transferred in the form of audio signals. The main use of these telephone services is in submarine communications. These telecommunication services are developed in the early ’90s with the pair of wires of the analog signals.

Optical communications :

After the use of the Telphone Repeaters, Optical communications are used. These optical communications use fiber optic cables to transmit the information in the form of pules in fiber. Inside the fiber optic cable, it consists of a semiconductor that converts the light into electrical form. Similarly, to the telephone network, optical communication also consists of the amplifier for the increase of the power in the electric signals.

Normally there are two types of repeaters we use normally for data transmission.

  1. Digital signals
  2. Analog Signals

Digital Signals :

The data transmission is sent in the form of binary digits. The 0 and 1 are the values generated in the transmission of the data. The data can be transmitted for long-distance communication.

Analog Signals :

The data transmission is sent in the form of analog signals. The signals are sent. It uses the different frequencies for the multiple transmission of the data.

Radio Repeater

Radio Repeater

This Radio Repeater transmits the data in the form of radio signals. Normally it has two ports, a radio receiver, and a radio transmitter. The radio receiver receives the data in the form of signals. the radio transmitter retransmits the data that is received from the Repeaters. Two different frequencies are used while receiving and retransmitting the data.

Features Of Repeater

  • These repeaters are interconnected to each other at the physical layer.
  • It Transmits the signals for the weaker locations to strengthen the system signals.
  • These receptors connect the different network signals to transfer the data between the two devices.
  • These Repeaters can remove the distance between the two devices.
  • The Repeaters can continuously monitor the signals that are generated between the two LANs.
  • As the electrical signals travel the longer distance, signals get weaker. These Repeaters came to the place to boost the weak signals to get stronger in the transmission of the data.
  • Repeaters can provide flexible networking.
  • Multi-site connection solutions support the 30 repeaters connected to it.
  • All the Repeaters are connected through the IP network with an IP site connection network.
  • This IP network can provide a quick response to any problem in the repeater network.
  • These receptors can provide 100 % digital communication. so that they do not need to wait for the analog voice calls.

Advantages of Repeater

  • The Signals get weaker as it travels to the longer distances. The Repeater supports the strength of the signals.
  • These Repeaters are cost-effective and simple to use.
  • The Repeaters don’t affect network performance.
  • Not all the signals can be connected using physical media.
  • These Reapetors has the capability to retransmit the data and strengthen the weak signals.

Disadvantages of the Repeaters

  • We can only connect the limited number of repeaters to it.
  • If the no. of repeaters is increased, the number of collisions increases.
  • In repeaters, we can not connect the different network architectures.
  • The data traffic cannot be reduced in the Repeaters.

Repeater Vs Router


  • A Router can act as the Repeater but a Repeater cannot act as the router.
  • The Repeater is present in between the collection of two Local Area Networks.
  • Data is getting transmitted in the form of analog signals.
  • The data can be represented in the form of bits.
  • The Repeater itself cannot connect directly to internet access.


  • A router provides internet access to all the near devices.
  • The Router searches for the best shortest path, to transfer the data between the neighboring devices.
  • The IP address is used to transfer the data from one network to the other Network.
  • It is a Hardware device that finds the shortest path between the network.
  • We can connect multiple devices in the same network.
  • We cannot directly connect to the internet from the router.
  • The Router can work as a repeater but the repeater cannot work the router.

Repeater Vs Bridge Vs Hub

Repeater :

  • The repeater is a network device that receives the signals and retransmits the data to the receiver side.
  • It only works at the physical layer of the OSI model.
  • It is mainly used to regenerate the signals it received and retransmit them to the receiver side to transmit the data.
  • The data can be transmitted in two types Digital Signals and Analog signals.
  • In digital signals, the data is transmitted in the form of 0’s and 1’s. It reconstructs the data.
  • In analog Signals, the data can be transmitted in the form of the signals. It amplifies the data signals.

Bridge :

  • In Bridge, it has two-port devices. Each port is connected to a different LAN signal.
  • The bridge checks the destination address before transmission
  • The Bridge can maintain traffic signals.
  • This Bridge performs in the data link layer of the OSI model.
  • In this layer, the data is stored in the form of frames.


  • It is the combination of the multiple lines electrically in a network.
  • The Hub will not amplify the signals in data transmission.
  • Hub also operates in the physical layer similar to the repeaters.
  • The main aim of the Hub is to design multiple line cards.
  • The HUB connects the different connections at the Local Area Network. We call the HUB the collision point in the LANs.

Summary of Repeater:

The Repeater is a network device that receives the data from the sender and retransmits the data. It is mainly used to regenerate weak signals. There are different types of Repeaters in the network. Optical fiber networks, telecommunication networks, digital signals, and radio signals, and analog signals are the different categories in the transmission of the data. These repeaters are used for the larger area distances. The main advantage of these repeaters is we can re-strength the weak signals to transfer to the receiver side. It gives a high-security performance during data transmission.

Second Explanation of Repeater

What is Repeater in Networking

A Repeater is a network device that regenerates the incoming signal gives strengthens to transmit it to the next devices which are connected without losing any actual data or the information. To know more about What is Repeater in Networking keep reading this article till the end.

It is used in the transmission system to regenerate the analog or the digital signals distorted by transmission loss. An important point needs to be noted that repeater does not amplify the signals it only regenerates the signals to transmit at the longer distance. When the signals become weak, they copy the signals which are in the bit form and regenerate it at the original strength.

It is a two-port device and it operates at the physical layer of the OSI Model.

Repeaters were introduced in wired data transmission networks due to the limitation of a signal in propagating over a longer distance and it is a common installation in wireless networks for expanding cell size.

There are several different types of repeaters some of these are:

Telephone Repeater

Telephone repeaters are used to increase the range of telephone signals in telephone lines. Telephone repeater is further categorized into two types-

  • Landline repeater
  • Submarine repeater

Landline Repeater

Landline repeaters are the most frequently used repeaters in trunklines that carry long distance calls. Analog telephones line consists of a pair of wires in which the amplifier circuit uses the power from a Direct Current source to increase the power of the AC (Alternating Current) audio signals on the line.

The telephone repeater was the first type of repeater and was the first application of amplification. Now, most telecommunications cables are fiber optics cable that uses the optical repeater.

Submarine Repeater

Submarine repeaters are used in the underwater. This submarine repeater helps in regenerating the signals even on the underwater and made the communication possible everywhere.

Optical communications repeater

Optical Communication repeaters are used to increase the range of signals in a fiber optics cable. In this repeater, Digital signals travel through a fiber optics cable in the form of a short pulse of light. The light consists of particles called photons, which can be absorbed or scattered in the fiber.

However, optical amplifiers are developed for repeaters to amplify the light itself without the need of converting it to an electric signal first.

Radio repeater

A radio repeater is used to extend the range of coverage of radio signals. The radio repeater typically consists of a radio receiver that is connected to a radio transmitter. The received signals are amplified and retransmitted often at the other frequency to give the coverage beyond the obstruction.

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Benefits or Advantages of Repeater

  • A repeater is simple to connect
  • It is cost-effective
  • It has the ability to boost or strengthens the signal to retransmit.
  • Repeater can extend the transmission distance.
  • A repeater does not badly effects on the network performance
  • Some repeaters can connect networks using various physical media.

Drawback or Disadvantages of Repeater

  • Repeaters are unable to reduce network traffic.
  • It cannot connect different network architectures.
  • Limitation in the number of repeaters.
  • It does not segment the network.
  • Most of the repeaters on a network produce noise on the wire and increase the possibility of packet collisions.
  • Repeater does not separate the device in the collision domain.

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