hi,
i have a router with tri-band wifi : one 2.4Ghz and two 5Ghz
in Luci when i check the channels for both 5Ghz radio, i can see that it is splitted.
One wifi go from 36 to 64 and the other one go from 100 to 173
if i want to disable one wifi 5, and enable the other one with the full channel list from 36 to 173, or just change the way it is splitted . how can i do that ? is there a command or a file to edit somewhere to enable/disable channels for a radio ?
probably not allowed, same thing with Asus Lyra AC2200 mesh nodes, based on ART data.
you mean it's in the hardware and we can't change it ?
no, it's in the ART data stored on flash, so probably changeable, if you want to go down that rabbit hole...
OK, so it's not something that can be managed from openwrt ?
Sorry never heard about ART data...
you can export/read it, but not change the content, in any easy way.
OK, it's clear now 
From your point of view, why they split the channels on both Wifi 5 ?
I guess it's so that they don't interfere with each other if you put them on the same channel ? right ?
yes, that would be my guess too.
Just to be clear, ART is not end-user manageable.
depends on how hard core you wanna get, but yes, I'm aware, and agree 