Each signal is gradually scattered in space. But our civilization is now very much tied to ensure that all data gets to the destination in a holistic way. And how to do it? So something is needed that could reinforce or repeat them. And here comes the repeater router to the rescue. What it is? How does it function? What are the operating modes and how to configure them? Here is a short list of issues addressed.
Repeater - what is it and where is it used?
We’ll deal with the terms first. GSM repeater is a repeater and
amplifier of cellular signals, which are necessary to locally expand its coverage area. These are complex active electronic devices that operate together with radio frequency cables and antennas. These devices can be independently used by any user of a 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 figured 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:
- When it is necessary to get a stable connection in a place where reception is poor (rural areas or at a considerable distance from cities). Here the problem is solved thanks to the donor antenna, which is highly located and has a sharp direction in one direction.
- 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 the subway 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 has a positive effect on the duration of the phones without recharging due to the fact that they do not need to intensively search for a signal. Due to the reduction of interference to other electronic circuits in the nearest territory, they have found application in passenger aircraft. By the way, you can put some other devices into repeater mode.
Principle of operation
How is the repeater arranged? What is it from a constructive point of view? This device can be classified as a bi-directional amplifier that connects the donor and service antennas, while making the correction of the waveform. Moreover, the first receives data from the base station, and the repeater amplifies and transfers them to the second, and from here the information is sent to the telephone. Feedback is the same. To prevent the effect of self-excitation and data circulation between antennas, good electromagnetic isolation between them is necessary. But this is not the top of perfection - there are the best representatives who are called repeaters. Reception and
transmission of information in them are carried out on channels with different frequencies. Therefore, the probability of the occurrence of the effect of self-excitation is excluded. Repeaters themselves, despite their simplicity, have a reliable system of protection against negative effects. That's the whole principle of operation of this device. I hope that the main questions in this plane have been exhausted for you, and you can close the topic about the repeater. What this is - we already know, therefore, we proceed to the installation and operation mode.
Installation
How to configure the repeater? Place the device on a flat surface. Ensure the free passage of air around the radiator of the repeater. Also, there should be no heating appliances nearby. Fix the antennas and run the RF cables from them to the repeater.
The detachable connection must be carefully insulated with the help of special means: hermetic tapes and silicone sealant. When the repeater itself starts, it is imperative to check if there is a signal from the base stations. The antenna must be tuned so as to receive 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 doing so, ensure that the RF surfaces are clean. If there is dust or moisture inside, you should use a cotton swab or rags moistened with rubbing alcohol and then dry. Plug in the adapter. A repeater is already connected from it. So, the device is now installed and can function. But before that you need to choose how it will work. Start configuring your system according to the possible modes below.
Access Point (AP) Mode
It is used to make the device act as a wireless Wi-Fi hotspot. Here everything is tied to the SSID. Therefore, if you want to make the device work like this, you must enter all the data in 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 cable that will connect two parts of one whole. To do this, just turn it on, set the necessary parameters - and you can work.
AP / Bridge Mode (AP + Bridge)
It combines the advantages of previous capabilities. It also provides functionality in which it is possible to connect three or more units of a 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, more than two points / bridges can be connected, and even whole “chains” can be created, based on which is a repeater. What is it, I think, no 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 their zones of influence, then the system selects the work through the one that provides the largest signal. The roaming function is to collect and transmit information about wireless stations. Thanks to this, the user will not feel that interruptions in communication occur periodically, because he will immediately go to another point.
Conclusion
So we “sorted” the repeater, what it is and many other aspects. An important advantage that this device has is not only its functionality, but also the ease of configuration. Usually, in order to configure the device, you only need to enter a designation where to connect and how - and this is enough, because the wifi repeater does the rest. What is it, as well as its capabilities were considered throughout the article, so now there is nothing left to do but say goodbye to you.