@Swistheater /
@Chrisgtl Did you not understand the diagram?
The
UK Band "
A" channels are
36-64 i.e. in increments of
4 in the GUI.
If you select
20MHz width, you have
8 discrete channels, and a WiFi scanner will show these
8 channels.
If you select
40MHz, then you will occupy
2 channels, leaving only 4 separate channels, so in the GUI, as an example, selecting either
44 or
48 will show up in a WiFi scanner as
Ch46.
If you select
80MHz, then you occupy
4 channels, so in the GUI, selecting any of the following
36,
40,
44 or
48 will show up in a WiFi scanner as
Ch42.
Simples!
In much the same way as using
20MHz and channels
1,
6 or
11 for the
2.4GHz WLAN Spectrum, to be a good neighbour and reduce the amount of interference, it is sometimes necessary to use the discrete
20MHz channels i.e. suppose you had 6 APs, you wouldn't want them all hogging say
Ch42 fighting each other, so you would assign each of them to a different
20MHz channel,.
Hope this is helpful.