If you use one router WiFi to connect to Internet And you live in a busy area (eg a block), most likely you have noticed that PC-ul you intercept signals from several Wireless networks (ie neighbors), and not just from yours sometimes, when you have problems with the router signal, the explanation could be the agglomeration of the channel on which it is transmitted. Although we do not guarantee that channel change will give you a Faster connection (It also depends on ISP and by the purchased plan), at least the wireless signal of the router will be stronger.
Most routerelor WiFi I still use the band of 2.4GHz (all WiFi versions including 802.11n, opera between frequencies 2400MHz and 2500MHz; WiFi version 802.11ac, launched last year, uses the tape of 5GHz, but few routers have adopted this tape so far), which is divided into 14 channel for many 20MHz each, which overlap each other so that they fit in those 100MHz available.

The most used router channels are 1, 6 and 11 (One of those channels is automatically selected by the router when creating wireless network, due to the fact that they do not overlap). But if in the same area there are several WiFi networks that use the same channel, its agglomeration will affect the router signal.
How do we find out which channel is best for the wireless network?
If you are a user Windows, you can find out quite lightly what channel USE Wireless networks of neighbors with the help of utility WifiInfoView, this way you can choose the least crowded channel for your network.
VifiInfoView It's O Free utility and portable (does not require installation), developed by Nirsoft, with the help of which users Windows I can find out certain details so much about WiFi network own, as well as about the wifi networks around it.
After downloading archive With the application, extract its contents and run the file exe. Immediately a one will be displayed list of wifi networks nearby this containing beside name, Mac addresses, the power of the signal, the manufacturer of the router etc, if channels which they transmit the wireless signal. Depending on the number of networks, you can select (preferably between channels 1, 6 and 11, but too 13 and 14 can be quite plausible options) the least crowded channel (in this case, both the channel 1 as well 6 are quite crowded, in addition the channels are used 2, 5, 8 and 9 which overlap over them; although 8 and 9 overlap and over the channel 11, this is the least crowded, so the most suitable).

How do we change the channel of a WiFi router?
If you don't know The address of the router (you can use it to set up settings for this), open an Command Prompt If you taste ipconfig. The address you can access The settings of the router is identical to that for Default gateway.

After you find out The address of the router, open one browser If you taste http://<default_gateway> in the address bar (if Default gateway it is 192.168.0.1, then tutted in http://192.168.0.1 in the address bar). Most likely you will be asked to enter a user and a word to access the settings of the router.

If they have not been modified by you or the person who configured the initial router, they will most likely be a combination between admin and empty space (Usually these are admin for the user and empty space for password, or admin for the user and admin for the password; to find out exactly the combination, you can look for The model of the router you on Google).
In Router settings, sub Internet Setup/Wireless Settings, select CHANNEL desired from The Drop-Down menu from the right Channel, then click on Save or Apply (Depending on the router, it might require a restart).

And ready. After you make these settings (ie after you choose the wireless channel the least crowded), you will notice that The WiFi signal of your router will be stronger, which will improve (to some extent) and the internet connection.
STEALTH SETTINGS – How to improve WiFi router signal in Windows