Survival in the jungle WI-FI - WLAN channels

WiFi network is that thing in our lives that makes its presence felt when it goes wrong, otherwise, if netul goes well, no no stuffing into account.

A WLAN that works.

Because WiFi network to function properly, we must meet some rules. The wireless router must be good, as this Asus AC56U or this AC87U; Positioning can increase our router coverage; the use of repeater It can greatly help defray some ample, but the most important is to Well configure router from the outset.

Recomandat - WiFi router buying guide

spectrum unlicensed that we can use all without license is restricted, should therefore be used carefully if we want performance and pleasant browsing experience.

2.4 GHz Wi-Fi channels (802.11b, g WLAN) .svg
From the almost complete Michael Gauthier, Wireless Networking in the Developing World - I created this work based on Image: 2.4_GHz_Wi-Fi_channels_ (802.11b, g_WLAN) .png, CC BY-SA 3.0, Link

WiFi available channels

In 11 channels are USA, and in Europe we 13 available channels. Now do not think that we can use 11 or 13 devices connected simultaneously. Each device uses multiple channels simultaneously and therefore have to arrange everything ordered to fit us all without stepping on each foot.
In the USA you can put on the 11 3 channel devices, and they will have every piece of tape and we will have no interference. In Europe 4 device can cram many sites in the broader spectrum of 13 channels.
In the picture below clearly see how the devices should be arranged on spectrum.

By Liebeskind - Own work, CC BY 3.0, Link

What we choose to channel WiFi?

You have to do a little detective work, using some apps for viewing area networks; This will determine which channels you have available or if some channels are free.
We can walk and channel width. Although a 40 mhz channel gives us better speedIt occupies more space in that spectrum, and therefore it is better to reduce the 20 mhz channel to avoid overlaps with other channels.

Wireless spectrum congestion

Many are asking: What happens if agglomerate radio channels?
You alone can answer this question if you imagine that spectrum is a highway and packet data are cars that go through the air; What else can you catch when the speed is super busy highway. In an area saturated with radio spectrum we have the slowing of traffic (low speed) and interference (nerves). If we go all motorcycle (ie 20Mhz) instead of drive (40Mhz) I fit more. as if I find some free bands as well as (channels 13 and 14).

Applications used in the tutorial:
Android - WI-FI Analyzer
Windows - Acrylic WI-FI Home

Video Tutorial:

Related Tutorials

About Cristian Cismaru

I like everything related to IT&C, I like to share the experience and information I accumulate every day.
Learn as you learn!


  1. it's normal to have conficts to many routers

  2. conflicts

  3. Cristi you can help me I installed to clean windows 10 pro, and I opservat that the system tray icon appears in safely remove hardware, and I'd like if possible to disable the tray icon safely remove hardware, but not all aces wants to be with 7 is to defend the system tray only when you insert a uSB stick into the computer, otherwise disappear!

  4. Stefan drug said

    I love you post Cristi Cizmaru because in momoentele where you panic and do not know what to do Cristi set ups can help with Windows and etc.

  5. I router UPC and left the car. A frequent and I left and the 2.5 and 5.5 and I never had pb conflict. although they are in range where routers are over 10 wfi. credca f depends how much and my routeru plays canalalele and automatically detects when you connect a phone or laptop to it. and choose the channel most ok. f depends modu than interpretation.

  6. Andrei Munteanu said

    "Also, if we could find some free tapes, that would be good. ”You wrote be with two“ i ”

  7. Cristi auzui incredibly slowly. Try with a microphone most advanced camera not built-in microphone

    • I hear better. And other visitors can tell us how to hear.

      • Adrian Gudus said

        I hear you perfectly clear. If you have some hearing problems, not our problem. Ask your doctor!
        Maybe you should tell the person who's complaining, what microphones you have. Not to dream of webcam microphones. I remember that one of the microphones you presented here also costs somewhere between 300-400 lei. Listen, webcam microphone. Yes… .what can I say, we have been doing tutorials since yesterday, not since 2008 :-))

        • Karolin said

          I mean volume should give a lot. And when I listen to something on youtube is very much along as you hear yourself CRISTI

      • Cristi hear you perfectly. credca did not loud enough times to headphones or speakers. or pate has headphones / speakers made on vaport to go slowly (recommended to buy some headphones or speakers ok) or PC is given slowly volumul.saua Playeru yt.sau if this control is to otolaryngology. Despite the one you have Christ as saying that the microfonu room vb :)). yeah what to say

        • Karolin said

          I did not say that sounds stupid. Indeed hear clearly but slowly compared to other records that are found on youtube at the same level of volume compared to the records of Christ and those on YouTube, he hears slowly. And I do not know and do not know you believe me sit well with hearing. And I'm benchmark assembling PC Market Service. Calin sit in your bank

      • sounds good to me and I have special headphones

  8. I can hear you well

  9. Gelulache said

    Off-topic: you make a documentary about the Raspberry Pi using a RADIUS server. Thank you in advance.

  10. DorianORCHESTRAro said

    db Audio Normalization 0 a tutorial. Thanks for the info tutorial.

  11. Hello Cristi. Telekom own a router from HG658. We 3 SSIDuri active at the moment: Fon Telekom (which is the default and do not know how to disable it), and SSID SSID 1 2. I try to set for each SSID SSID 1 and 2 channel, but does not work for each. For example: if you put the SSID 1 5 channel, save, I'm going to choose SSID and channel 2 12 to rescue the SSID 2 channel number and apply for SSID1. Can I do anything about it?

  12. An issue that is unrelated to the subject. When I search for something on the site, as a result, I only see: Unauthorized access to internal API. Please refer to
    I use Win 7 × 64. This is what happens with Opera and Chrome, how can I solve the problem ?, I mention that I am up to date with the browser versions. With Firefox, my search works. If you think it is the subject of a tutorial, I am waiting for it if not, I am waiting for advice, thank you

  13. cosmin vasile albu said

    Hi, I downloaded winbox 3.27 and not to use it

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