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Wi-Fi channels: which channel to choose for a Wi-Fi router and how to find the best?

Wi-Fi channels are the frequencies at which user access points function.

Currently, almost all routers broadcast a wireless network using a frequency of 2.4 GHz. For new generation devices, the frequency of 5 GHz is a frequency, but the number of such devices is currently minimal.

Frequency bands form special channels:

  • At a frequency of 2.4 GHZ in the Federation and Ukraine, it is permissible to use channels from only 1 to 13: Any Wi-Fi network operates in this channel range. This should be taken into account when setting up a router, Each user chooses the state of using his router.
  • In the United States, the permissible use of the number of channels is generally 11. For this reason, there are difficulties while connecting to a wireless network of a device brought from the United States: it cannot see Wi-Fi, operating on 12 and 13 channels.

Get deep into the details

It is believed that there are “overlapping” Wi-Fi channels and non-discharge. The latter usually mean “1/6/11” and they say, supposedly using them you will get the highest increase in speed and the least amount of interference.

However, this is not always the case, because Wi-Fi is a broadband technology and it is impossible to completely hold back the signal within the channel.

router, which, channel, select, wi-fi

As the illustration shows from here above, the signal at 22MHz does not end and even the non-oversteping channels are blocked: 1/6 and 6/11-by ~.20dbr. 1/11-on ~.36DBR. 1/13. on.45dbr.

An attempt to put two access points configured to neighboring “non.overwhelming” channels will lead to the fact that each of them will create a neighbor at 20DBM. 20DB. 50DB (which we add to the loss of signal distribution to a small distance and a small wall) =.50DBM.

This level of noise is able to score in entirely a useful Wi-Fi signal from the next room, or block your communications almost entirely, t.if you put the point next to the wall, and your neighbor is on the other side of the wall, its point on the neighboring “non.overwhelming” channel can still cause you serious problems.

If we talk about Wi-Fi channels, just

In general, I went a little into the depths of the theme, if we speak simplified, then this is what you need to know and understand:

Many devices broadcasting and taking on the same channel within the same frequency create interference and affect the speed/quality of communication, t.e you need to “pull out” the whole thing at different frequencies, especially in the case when you have many neighbors, most of which do not set up routers and everyone hangs, say, on the 1st channel.

The simplest example of this is the presence of a Wi-Fi headphones at home and one (better than two) routers. With a certain coincidence of the VAFLI broadcasting channels, in fact, you can not only often lose communication when moving around the house, but also hear characteristic interference in them: the so.called “robotic” sound and the like horrors of life.

The need to choose a channel

Due to the colossal workload of the channels, interference is created to all users, a significant decrease in Wi-Fi speed occurs, the discharge of connections. As a result, the owner of the router has to start searching for a new channel.

Typically, difficulties appear after two or more Wi-Fi networks are fixed on one channel. For a user from a private house in the coverage area of ​​its Wi-Fi, other networks may be absent or there will be a very small amount, and the signal is weak. There may be several networks in the apartments that can stand on one channel (for example, if the user selects a certain channel, and his neighbors make a similar choice). The more access points are divided by one frequency, the stronger they will interfere with each other, and the speed will decline.

Most routers have the default option of automatic channels. This means that during the inclusion of the device, he must analyze other Wi-Fi network and make a choice of a free or least loaded channel.

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However, such actions of the device do not occur in every case. You can solve the issue in this case with manual setting. Special utilities help to identify the presence of Wi-Fi networks nearby and what channels they occupy. Then, the necessary channels are installed in the settings of the router.

To identify the channels occupied by neighbors, they use a special insider utility. This is a free program, very popular currently. How to use a program to select the optimal Wi-Fi channel shown in this

How to check for workload and find the best free Wi-Fi channel?

In order for you to work stably and without interference, you first need to check which channels are involved at the access points of your neighbors. To find the most free Wi-Fi channel and choose the best in your specific situation, we will use a free application-a Wi-Fi channel scanner for a smartphone called Home Wi-Fi Alert. It is free of charge for Android users, but for the iPhone I managed to find only paid analogues.

router, which, channel, select, wi-fi

Install it and run it, after which we go to the section “CTI structure” and select the range 2 with a flag.4 GHZ.

Many will have the same picture as mine. a lot of parallel networks will be found from different access points with different force. There is a figure next to their name. this is precisely the channel on which they work. Three on “10”, three on “1”, one at “6” and “7”.

Channels 1, 6 and 11

First of all, let’s talk about the frequency range of 2.4 GHz, because, even though the second half of 2016 is outside the window, most Wi-Fi installations still use 2.4 GHz stripes. Thanks to the standard 802.11ac, which appeared back in 2013, the range of 5 GHz is slowly gaining popularity, but, thanks to reverse compatibility, routers and other devices, as well as lower costs in the production of peripheral devices with less expensive chipsets, the frequency range of 2.4 GHz will continue to continue For some time his reign on the throne Wi-Fi.

Wi-Fi channel diagram 2.4 GHz

Early versions of Wi-Fi standards, including 802.11n (a, b, g, n), operate in the frequency band between 2400 and 2500 MHz. These 100 MHz are divided into 14 channels of 20 MHz each. As you already, you probably managed to notice, 14 times 20 MHz is much more than 100 MHz. And, as a result, each channel in a frequency range of 2.4 GHz intersects with at least two (and more often. four) other channels (see the diagram for It is not difficult to understand that the use of intersecting channels does not greatly contribute to the data transfer speed. over, in fact, this is the main reason for the poor throughput of your wireless network. Fortunately, channels 1, 6 and 11 are located at a sufficient distance from each other so as not to overlap. With non-mimo installations (that is, for standards 802.11a, b or G) it is best to try to use channels 1, 6 and 11. If you use the standard 802.11n with channels 20 MHz width, also focus on channels 1, 6 and 11. If you plan to use 40 MHz channels, then keep in mind that the broadcast in the range of 2.4 GHz can be too overloaded, unless, of course, you live in a private house in the middle of the endless field.

Which channel is better to use in a crowded place?

Actually, if you want to get maximum throughput and minimum interference, then channels 1, 6 and 11 will be the best choice. But if there are other wireless networks near your location, one of these channels can be the best option than the others. For example, if you use the channel 1, and someone next door to you persistently and irritating you will use the channel 2, then your connection will fall significantly. In this case, it is best to change your channel by 11 to completely avoid interference (although in this case channel 6 will also be not a bad choice). It may seem tempting to use a channel that differs from 1, 6 or 11, but in this case you yourself will cause interference for other wireless networks, and any channels 1, 6 and 11 used in the neighborhood will affect the throughput of your access point. In the ideal world, you could meet and agree with your neighbors to ask your routers to use different channels: 1, 6 or 11. Also keep in mind that the internal walls contribute to a significant softening (weakening) of a wireless signal. Therefore, if there is a solid brick wall between you and your neighbor, then you can most likely use the channel 1 together, practically without interfering with each other. But, if there is a thin wall between you (or a large number of windows), you will have to use different channels. There are a large number of software tools that can help you find the most free channel. But, probably, it will be faster to simply switch between channels 1, 6 and 11, until you find the one that will work best. So, for example, you can send a file from one laptop to another by wireless connection to test the throughput of each channel.

Be prepared for a large number of antennas

The most attractive possibility of a frequency range of 5 GHz is that it offers much wider possibilities at higher frequencies. Here users are available 23 non.overwhelming channel 20 MHz wide. Starting from standards 802.11n and ending 802.11ac, wireless technology as a whole has become much more advanced than during the peak of popularity of 802 standards.11B and G. If you have at least a corresponding router with support for 802.11n, and better. 802.11ac (that is, if you bought your router over the past few years), you most likely have a tool inside your device that can automatically choose the right channel and change the output power to maximize throughput and minimize interference. If you use the frequency range of 5 GHz, and your walls are thicker than paper, then a sufficient attenuation coefficient and the complete absence of other devices operating on a frequency of 5 GHz on the air will mean that there will be very few interference in your room, which means the possibility Effectively use wider channels 40, 80 or 160 MHz, if you feel the need for this. In the end, we all sooner or later upgrade our equipment and we will actively use a more promising frequency range of 5 GHz, and the choice of the right channel will become a matter of the past. Perhaps then certain situations will still remain when the purpose of the channel will make sense for the accurate setup of the router. But when we are dealing with MIMO-functionality (supporting up to eight spatial channels in standard 802.11ac), the best choice of channels will usually give your router a choice. Of course, the time will come when the frequency range of 5 GHz will become overloaded, but by that time, we hope that we will have the opportunity to effectively use higher frequencies (for example, 60 GHz Wigig) or completely new antenna structures (like PCells, with its enormous possibilities to serve a large number of users) to cope with the requirements of our wireless networks in the foreseeable future.

What is the Wi-Fi network channel and why change it

Classic routers are able to support from 1 to 15 channels, depending on the technical features. Wi-Fi network channel is under the frequency on which the device works. The more connected routers, the more interference and less throughput will be. Under frequency is formed on a broadcast or router.

Replacing the channel, as well as a Wi-Fi check, sometimes necessary. For example, there are several routers, the signal of which intersects and functions on one channel. In the operation of a router or a wireless network, errors may appear in the form of a constant break in the connection of the router, low speed, etc. D.

Reasons for use

External interference can reduce the speed of information passage. The bitrate starts to fall significantly. So that this does not arise, you should place a router in a working microwave oven. Interference is formed from phones, sunlight, industrial and military facilities. Even USB-3 phonit.

Checking Wi-Fi channels allows you to detect available SSID without extraneous factors. For this reason, even a free niche can sometimes work poorly. The software should be taken into account by building a home network.

note! Seeing that the speed has significantly decreased, it is necessary to use shielding with directed antennas. Avoid crossing the radial line. Microwave radiation is very harmful to the body. Worsens memory, immunity, blood and sleep.

How to install or change the width of the channel on a router

Any router can broadcast in 2.4 GHz mode. The most modern devices also support the operating mode of 5 GHz. Few of wireless standards work only in this range, but they also have reverse compatibility with gadgets for 2.4 GHz. Before indicating the bandwidth, you should pay attention to the Wi-Fi specification in the settings. The wrong communication standard can make an inaccessible configuration of the desired frequency range.

The location of the parameters of the channel width, its number and the standard of wireless communication in the configuration of the router depends on the firmware version.

Old equipment may not have access on the Internet after setting, if the width of the Wi-Fi channel is 40 or more MHz. If the router operates in inappropriate mode, the devices are able to identify the network without real access to it. This connection is suitable only for the exchange of system data between the router and the device.

To change the value of the passing strip, you first need to open the router settings. To do this, you need to connect it to the system unit, turn it on and enter the device in the address line of the IP address. It is usually indicated with the login and password by default on the lower or back of the case.

The capacity settings are determined by the router model, version and localization of the firmware. The parameters “Channel width” or “Call” can also be named Channel Width and Bandwidth.


To set the width of the Wi-Fi channel in the TP-Link integral, you need to go to the “Wireless District” tab in the menu on the left, and select “Wireless Settings”.

The frequency range configuration for devices of this company is located in the item “Wireless Network” list “Additional Settings”.

Zyxel Keenetic

Zyxel Keenetic Roter channel settings are on the Wi-Fi tab.

In some versions of this Inte We, the network capacity can be set in additional settings of the Home Network tab.


To indicate the width of the Wi-Fi channel in modern Keenetic routers, you will need to go to the home network tab in the “My Networks and Wi-Fi” section.

Each frequency range has the “Additional Settings” link. By clicking on it, you can set the throughput and other Wi-Fi parameters.


To select the length of the passing strip in D-Link devices, you will need to go to the “Additional Settings” item Wi-Fi menu.


Wi-Fi channel selection parameters in the Tenda software shell are on the Wireless Settings tab.

The high value of the bandwidth increases the speed of the connection, but cannot serve as a guarantee of its stability. The wide stripes of neighboring coatings interrupt each other, reducing the quality of the connection below the indicators of the range of 2.4 GHz.

General information about channels

Wi-Fi channels are the frequencies at which user access points function.

Currently, almost all routers broadcast a wireless network using a frequency of 2.4 GHz. For new generation devices, the frequency of 5 GHz is a frequency, but the number of such devices is currently minimal.

Frequency bands form special channels:

  • At a frequency of 2.4 GHZ in the Federation and Ukraine, it is permissible to use channels from only 1 to 13: Any Wi-Fi network operates in this channel range. This should be taken into account when setting up a router, Each user chooses the state of using his router.
  • In the United States, the permissible use of the number of channels is generally 11. For this reason, there are difficulties while connecting to a wireless network of a device brought from the United States: it cannot see Wi-Fi, operating on 12 and 13 channels.

Life hack first: divide the networks 2.4 and 5 GHz

Modern routers are they can transmit a signal at 2.4 GHz frequencies (Wlan B/G/N) or 5 GHz (Wlan AC). We wrote about this in detail in our article on the choice of a router. read to figure out:

You can eliminate interference in the Internet by distributing devices at different frequencies. Understand which of the devices on your network can catch Wi-Fi 5 GHz. This is usually spelled out in the technical characteristics.

After that, go into the settings of your router and create two different wi-fi points instead of one. Let one point operate at a frequency of 2.4 GHz, and the second at a frequency of 5 GHz. For each router, the instructions for creating a point are individual, so here we will recommend nothing.

Choosing a Wi-Fi frequency in the Mikrotik router settings.

After that, connect the WLAN AC devices to the point 5 GHz, and the rest to the point of 2.4 GHz. Thus, you will accelerate the signal for the “five.heigaerte” devices and significantly clear the channel for the “two.Gigertsev”. The Internet will become much more stable.

Characterization of channel selection modes

To improve the quality of work, you need to choose the most suitable frequency. This can be done using specialized applications. However, in most modern routers, an automatic choice mode is provided. Usually this procedure is carried out when the router is turned on.

When entering the router settings, it is important to know which country to choose in Wi-Fi settings. When using the 2.4 GHz range, a frequency strip from 2401 to 2483 MHz is used. For European countries and this period is divided into 13 channels. In the United States of America, another separation of frequencies is established. There are only 11 frequency spaces here. If it is wrong to establish the country, it may turn out that instead of 13 (in Europe) only 11 frequency channels (in the USA) will be available.

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When choosing suitable frequency intervals, you can use the Insider application. After it is downloaded and installed, it can be launched. After that, the application screen will appear.

In the upper part you can see a list of operating Wi-Fi channels and their parameters. In one of the columns you can see which of them are used. The lower left part shows a graph that shows the loading of various frequencies in the 2.4 GHz range. To the right of it is a similar window for 5 GHz. Based on the data obtained, it is necessary to choose the one on which the load is minimal and switch the router to its use.

Important! Although an automatic choice can be used in the router, nevertheless it is not always convenient to use it. In conditions when there are many different sources of Wi-Fi signal, it will be more effective to choose the right frequency gap and set it manually in the router settings.

However, before resorting to manual setting, it makes sense to try other, simpler ways to solve the problem:

  • Reload the router;
  • reset the settings and install factory;
  • rearrange the router to another, more suitable place;
  • Change the method of encryption used in the settings of the router.

Sometimes, using one of these methods, it is possible to solve the problem with a slow connection.

The choice of a free wireless channel on a router

If it is clear which channel for the router must be installed, then it is necessary to properly change the settings of the router. In most cases, by default, an automatic choice is installed. The following is the situation when the device needs to be allowed to work only a specific channel.


Here, having entered the settings, we must go to the “Wi-Fi-Basic Settings” section. The line “Channel” indicates the necessary number.


In order to make the necessary changes, you need to enter the router settings and choose the page of the main settings.

You need to choose the line “Channel”. There is a falling list in which you need to specify the desired number. Then the changes made must be confirmed and exit from the settings.

In order to gain access to the ASUS router settings, you must indicate the address http: // 192 in the In the section “Wireless Network”, you need to go to the “General” tab and find the line “Channel”. The desired number is selected in the drop.down list.

After that, you need to confirm the changes by pressing the “apply” button.


When entering the settings, you need to pay attention to the lower menu. It is required to select the line “Wi-Fi“, and then go to the “Access point” tab. In the line “Canal” in the drop.down list, the required channel number is selected for Zyxel Keenetic.


To install the desired channel in the settings, you need to find the “Wi-Fi settings” section. The line “Canal” indicates the number of the one that is needed. After that, the entered data is confirmed and come out of the settings of the Xiaomi router.

router, which, channel, select, wi-fi


In the settings you need to go to the “extended mode”. In the line “Canal” in the drop.down list, select the desired number. Then it is necessary to confirm the changes made and get out of the settings of the router.

In order for the settings to enter into force, you need to restart the router.

router, which, channel, select, wi-fi

When working as a router, the correct selection of the channel is important for the quality of communication. If the connection has worsened, you need to determine the loading of various frequency stripes and select the most suitable.

Podgornov Ilya Vladimirovich all articles of our site are auditing a technical consultant. If you still have questions, you can always ask them on his page.

What are Wi-Fi channels, which is the essence of the parameter

Modern routers are supported from 1 to 23 channels depending on the frequency, model of the router, country and other factors. At the same time, Channel itself is a certain under frequency, which is used to work the device. The more devices operate on one Channel, the greater the number of interference, and the lower the throughput. This is why every user should know which channel to choose for a Wi-Fi router.

Immediately note that modern routers operate on two types of frequencies:

  • 2.4 GHz is an outdated frequency option that the most devices support. The number of Channel Wi-Fi is limited to 13, in some countries, for example, in the USA, there are only 11 of them. This leads to an increase in the number of interference and the emergence of problems with the network. The standard applied. up to 802.11n.
  • 5 GHz. a more modern frequency that allows you to work on a larger number of Channel. When considering the question of which channel it is better to choose for Wi-Fi at a frequency of 5 GHz, the administrator of the network has more options-23. Applied standards from 802.11ac and above.

The parameters are set by the administrator-a person who has access to the Wi-Fi Router settings. How to make these changes we will consider in the last section of the article.

Note that in the Wi-Fi network there are two types of Channel-overlapping and non-overwhelming. In the latter case, we are talking about numbers 1, 6 and 11. It is believed that their installation gives the least number of interference. But it is not always the case. To choose the optimal Wi-Fi channel, it is necessary to analyze the network.

In the search process, you need to be careful. If many equipment is connected to one Channel, this affects the speed and quality of communication, as well as the number of interference. This situation occurs when many neighbors are sitting, for example, at 11 under frequency. To solve the problem, it must be changed.

But remember that this is far from the only factor that affects the loading. For example, disputes on the topic still do not subside: does the router affect the speed.

How to find a free channel

In order to avoid the following situations, you need to know how to choose a free Wi-Fi channel. In many routers, by default, an automatic choice of Channel is installed. The router at the time of connection itself determines the least loaded under frequency and is connected to it. But this method does not always work. For greater reliability, it is better to check Wi-Fi channels yourself and find the best option.

For PC on Windows, two popular programs are allocated. Consider them in more detail:

  • Insider is a popular program that is available for PC or smartphones on Android. You can download it on the Internet, if you drive the name into the search. Before scanning the network, run Wi-Fi on the equipment, enter the program, and then go to the Networks section. In it you will see available connections and your own network. Pay attention to the Channel section and the information given in it. Now it remains to choose which Wi-Fi channel is better to use. For example, if testing showed the presence of a free channel, it can be selected. Do not be surprised if during the check the system shows the use of two under common. This is due to the fact that the router is tuned to the width of the channel of 40 MHz. If you set a mark of 20 MHz, there will be no such intersections.
  • Wi-Fi Info View is another program for choosing a Wi-Fi channel router. Its advantage in small weight and the absence of the need to install. Less data is displayed here than in the program discussed above, but they are enough to obtain information about employees under frequency. Before choosing a channel on a Wi-Fi router, enter the Channel section and see the degree of download.

For Android phones, you can use another program available for download in Play Market. Its name Wi-Fi Anaalizer.

How to setup?

Well, the main question: how to increase the width of the Wi-Fi channel is the setting is made using a web-intake or using special programs if it is more convenient for the user to work with them. Below we will give general instructions, but if you are faced with some problems, our website has an article on how to change the channel on a Wi-Fi router. So, in order to open a web-intake, you will need:

  • Dial in the browser in the address line (somewhat less commonly used and enter the user name (admin), the value is also preinstalled for the password (either 1234 or Admin). Data for authorization can be different if the user has changed pre.installed settings.

If the signal is worse with new settings or the difference is not felt. you can re.make changes.

Channel width 20 or 40. what is the difference? : 5 Комментарии и мнения владельцев

What is the width of the WiF 20 40 channel, this is the width of data skidding? the amount of megabit per second?

Good afternoon. Yes, the width of the channel is the width of the data passing in the frequency range. This width can be narrow. 20 megartz or wide. 40 megartz. And megabits per second. this is the unit of measurement of the Internet speed.

When using a 20 MHz channel, a smartphone does not see a router, only 40? why

What is the maximum speed if the channel width is 20 MHz, the range is 2.4 GHz, there are no neighboring points, and you distribute from one phone to another. Realme C3 (distributor) supports Wi-Fi up to 802.11 n