In this article we will look at which WiFi channel to choose among the 13 available to get the best results and analyze whether larger channels also perform better due to higher frequencys.
A few days ago we had you suggests some technical solutions to increase its speed WiFi your. An important step in that article was change of the broadcast channel from your wireless router. In other words, we suggested that you disable the automatic broadcast channel selection and set a channel of your own choice.
But routers have 13 channels (and some have 14). The choice is to find a channel with the least movement. If you are wondering that since you have two or more free channels which one to choose, let's take a closer look.
Each channel from 1 to 13 transmits on a central frequency which is 5MHz away from the next channel. But every channel except from the central frequency it also has a bandwidth with a width of 22MHz. It is easy to conclude that one channel overwhelms the other by sending interference to it.
The following graph will show the channel frequency range and you will see that the 1 channel has a central frequency of 2.412MHz, the 2 channel has a central frequency of 2.417MHz, etc. We repeat that the 14 channel does not exist on all routers and even in some countries it is illegal its use as its frequency is used for military purposes.
You will see that although the higher channels have a higher frequency, their difference is so small that it can be considered negligible. It is like saying that FM stations closer to the right frequency band, ie close to 108MHz, are more remote and clear than 88MHz. The difference is really negligible and you should not give it meaning. Elsewhere you need to focus.
You need to find a channel that not only has less traffic but also less overlap than the others. The automatic option that routers make as a priority is channels 1, 6 and 11. The reason is that these three channels, as you will see in the graph above, do not overlap with each other and therefore do not send interference to each other. Unfortunately, when your router checks to see which are the "empty channels", it only checks the space that is installed and does not take into account the 2 and 3 rooms beyond that you may be interested in having a good signal.
So when you do a frequency analysis of all areas of your home and find at least two or three channels that are less busy, then choose the one that has the least interference from its neighbors. Only then will you have found a "clean" channel without traffic but also without interference.
