The table given below provides the frequencies for the total of fourteen 802.11 Wi-Fi channels that are available around the globe. Not all of these channels are available for use in all countries.
2.4 GHz WiFi channel overlap and selection
The channels used for WiFi are separated by 5 MHz in most cases but have a bandwidth of 22 MHz. As a result the Wi-Fi channels overlap and it can be seen that it is possible to find a maximum of three non-overlapping ones. Therefore if there are adjacent pieces of WLAN equipment, for example in a Wi-Fi network consisting of multiple access points that need to work on non-interfering channels, there is only a possibility of three. There are five combinations of available non overlapping channels are given below:
2.4 GHz Wi-Fi channels, frequencies etc, showing overlap and which ones can be used as sets.
From the diagram above, it can be seen that Wi-Fi channels 1, 6, 11, or 2, 7, 12, or 3, 8, 13 or 4, 9, 14 (if allowed) or 5, 10 (and possibly 14 if allowed) can be used together as sets. Often WiFi routers are set to channel 6 as the default, and therefore the set of channels 1, 6 and 11 is possibly the most widely used.
Source: https://www.electronics-notes.com/articles/connectivity/wifi-ieee-802-11/channels-frequencies-bands-bandwidth.php
2.4 GHz Wi-Fi channel frequencies
Created: Dec 13, 2019 13:52:55Latest reply: Dec 19, 2021 20:06:58
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