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Welcome to our wiki. Here, you'll find guides on some basic networking concepts.

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Wi-Fi Standards and Channels

Below is a comparison of the most common Wi-Fi standards and channels available for use in the United States.

Comparison of common IEEE 802.11 standards

StandardFrequenciesMax PHY RateBandwidth
(Wi-Fi 6)
5 GHz14 Gbps20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz
801.11ac Wave 2
(Wi-Fi 5)
5 GHz3.47 Gbps20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz
(Wi-Fi 5)
5 GHz1.3 Gbps20 MHz, 40 MHz, 80 MHz, 160 MHz
(Wi-Fi 4)
2.4 GHz, 5 GHz600 Mbps20 MHz, 40 MHz
(Wi-Fi 3)
2.4 GHz54 Mbps20 MHz
(Wi-Fi 2)
5 GHz54 Mbps20 MHz
(Wi-Fi 1)
2.4 GHz11 Mbps20 MHz


2.4 GHz

There are eleven 2.4 GHz channels, all of which are 20 MHz wide. Note that the only “set” of non-overlapping channels is 1, 6, and 11:

5 GHz

No 5 GHz channels overlap:

Hardware manufacturers might have “interesting” ways of selecting channels. For example, let's say you wanted to set a UniFi AP to the first available 80 MHz channel. Technically, this would be channel 42. However, UniFi only allows you to select 20 MHz channels. Therefore, you would choose any of the 20 MHz channels within that 80 MHz range (36, 40, 44, or 48) and UniFi would actually set the AP to the correct 80 MHz channel (42).

guides/wifi_standards_channels.txt · Last modified: 2020/03/23 02:57 by aaronzufall