Repeater - what is it? Repeater: setting, setting, mode

Each signal is gradually scattered in space. But our civilization is now very strongly tied up in order that all the data fall into the destination in its entirety. And how to do it? So something is needed that could strengthen or repeat them. And then the router repeater comes to the rescue. What it is? How does it function? What are the modes of operation and how to configure them? Here is a short list of the issues discussed.

Repeater - what is it and where is it applied?

Initially, we will understand the terms. The GSM repeater is a repeater and amplifier of cellular signals, which are necessary to locally extend the coverage area. These are complex active radio electronic devices that function together with radio-frequency cables and antennas. These devices can be independently applied by any user of the cellular network. It is important that there is no need to obtain consent or to involve a mobile operator when there is a desire to use a GSM repeater. What is it, we have already found out, let's talk a little about when it makes sense to use them.

Application

It is advisable to use a repeater in such cases:

1. When it is necessary to get a stable connection in a place where there is a weak reception (the countryside or at a considerable distance from the cities). Here the problem is solved thanks to the donor antenna, which is highly located and has a sharp directionality in one direction.
2. To maintain the quality of communication in a territory that is shielded by a relief or building structure (s). Important is the location of the antenna in the line of sight of the phone.

Repeaters are used in metro and underground levels of various buildings (shopping centers). As a rule, they support only one communication range: GSM-1800, CDMA or GSM-900. Also, the presence of such devices positively affects the duration of the work of phones without recharging due to the fact that they do not need to search intensively for the signal. Due to the reduction of interference with other radio electronic circuits in the nearest territory, they found application in passenger aircraft. By the way, some other devices can be switched to repeater mode.

Principle of operation

How does the repeater work? What is it from the constructive point of view? This device can be classified as a bi-directional amplifier, which connects the donor and service antennas, while doing the correction of the waveform. And the first receives data from the base station, and the repeater amplifies and transmits them to the second one, and from here the information is sent to the telephone. Feedback acts the same way. To avoid the effect of self-excitation and data circulation between antennas, a good electromagnetic isolation between them is necessary. But this is not the top of perfection - there are the best representatives, which are called repeaters. Reception and transmission of information in them are made on channels with different frequencies. Therefore, the probability of occurrence of the self-excitation effect is excluded. Repeaters themselves, despite their simplicity, have a reliable system of protection against negative effects. That's the whole principle of this device. I hope that the main questions in this area have been exhausted, and you can close the topic about the repeater. That this is - we already know, so we move on to the installation and the mode of operation.

Installation

How to configure the repeater? It is necessary to place the device on a flat surface. It is necessary to ensure free passage of air near the radiator of the repeater. Also, there should be no heaters nearby. It is necessary to fix the antennas and lay the RF cables from them to the repeater. The detachable connection must be carefully insulated with special tools: hermetic tape and silicone sealant. When the repeater itself is launched, it is necessary to check whether there is a signal from the base stations. The antenna must be tuned in such a way as to obtain the best signal from the desired operator. If you need to use the services of several of them, be guided by those who have the weakest signals.

Connect the antenna and repeater connectors. In this case, make sure that the surface of the HF is clean. If there is dust or moisture inside, you should use a cotton swab or rags soaked before rubbing alcohol, and then dry. Connect the adapter to the power supply. It is already connected to the repeater. So, the device is now installed and can function. But before that you need to choose how it will work. Start configuring the system according to the following possible modes.

Access Point (AP) mode

It is used to make the device work as a wireless access point for Wi-Fi. Here everything is tied to the SSID. Therefore, if you want to make the device work like that, you must enter all the data of the connection network.

Wireless Bridge mode

It is necessary to connect two independent wired networks. Also, this mode can act as a wireless Ethernet extension that will connect two parts of the same whole. To do this, just enable it, set the necessary parameters - and you can work.

AP / Bridge mode (AP + Bridge)

It combines the advantages of previous opportunities. Also, there is a functional in which it is possible to connect three or more units of the wireless network.

Repeater mode Wireless Repeater (Bridge / Repeater)

It is necessary to connect two points in conditions when a direct connection between them is not possible. In fact, this mode is used to relay radio signals between them. Moreover, there can be more than two points / bridges connected together, and it is possible to create even entire "circuits", based on the repeater. What is it, I think, do not need to explain. To do this, enter the identifying parameters and start the device.

Roaming mode

This is not a self-tuning, but an addition to Access Point. If there are several connection points, and clients periodically move between the zones of their influence, the system chooses to work through the one that provides the largest signal. The roaming function is to collect and transmit information about wireless stations. Due to this, the user will not feel that the communication breaks periodically, because he immediately moves to another point.

Conclusion

So we "dismantled" the repeater, what is it and many other aspects. An important advantage that this device possesses is not only its functionality, but also the ease of setting. Usually, to configure the device, you need to enter only the designation, where to connect and how - and this is quite enough, because everything else does the wifi repeater itself. What it is, as well as its capabilities have been considered throughout the article, so now there is nothing else left to say goodbye to you.