hello. is it possible to add the ability to automatically select the channel width in the settings Wi-Fi?
What does this mean in practical usage?
- When connected to an AP as client?
- Or when configured as master AP?
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it's already there ?
just perhaps not the width you'd like it to be ...
in the wi-fi settings. Where the channel and channel width are configured.
Understood, but are you able to answer the question:
Need to know if you mean configuration an as an AP or as a Client (it matters which one).
there should be automatic consistency, maybe the device does not support this channel width option and, accordingly, there should be auto-tuning of the channel bus.
What does this mean?
???
As an AP or Client? 
when setting up the main Wi-Fi point on the router.
I assume this means as an AP.
If so, you simply set the largest bandwidth you desire (or that the law allows) for the radio. It will auto adjust [downward] if need be.
This feature already exists - it's the WiFi standard.
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some clients might not connect if you pick something wider than default though.
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Are you asking about 160 MHz? Because mt76 will advertise 160 MHz on lots of 802.11ac hardware without actually supporting it AFAIK.
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as I understand it, if I set the channel width to 40, then for devices that do not support this width, the router will narrow the channel to 20, but only for a specific device. the rest supporting the channel width of 40 will be at 40. do I understand correctly?
You understand somewhat correctly - or you're failing to consider TX and RX (it's difficult to determine).
- The client device controls its TX
- The AP master controls its TX
RX is not under the control of the receiving radio.
Hence, there is no "only for a specific device". So you (perhaps 
) understand incorrectly.
But...I think you are referring to TX...there is also a antenna "steering" algorithm you are not considering.
I would better clarify the wording in your statement as such:
for devices that do not support this width, the router can successfully use 20 MHz with that client
(I hope you're not getting into the nuances of Radio Theory. lol)
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with channel width 40 enabled on the router
Yep, I was gonna add that to the quote, I thought that was understood TBH:
with channel width of 40MHz enabled on the router - AND/BUT for devices that do not support this width, the router can successfully use 20 MHz with that client*
*- I assume this is standard consumer WiFi regulations and not theory
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That's what I wanted to hear. Thanks for attention. You can close this topic.
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