Greetings, I am interested in information about wi-fi 6e m.2 modules that can work with openwrt, as far as I know intel modules can't distribute anything except 2.4GHz, I use mt7922, but it has a problem that the driver limits the power to 3dBm and and through one wall, 5GHz devices are already starting to lose wifi connection.
There is quite a bit of (recent) discussion on similar topics, so I'll keep it (very) brief and mostly to the things that might not quite be handled quite that explicity.
mt7922 is a client-centric chipset, yes -contrary to iwlwifi- it still features some AP mode capabilities, but only in a limited fashion (limited number of connected clients, rx/ tx chains, features, ...) - while not totally useless, you do want an AP-centric chipset/ card for production AP uses.
This means:
- power consumption
- 10 watts (3.3V/ 3A! this is beyond specs and not supported by all boards; might physically damage the card/ board)
- this power also needs to be ventilated out, bulky heatsink required, active cooling recommended
- you usually still want to cover both (all three) bands concurrently, 2.4+5+6 GHz
- this traditionally requires three WLAN cards, one per band
- recently, there are some DBDC card (and we are seeing hints of TBDC ones), this is not without a cost though (rx/ tx chains halved/ thirded)
- with wifi 6e, you are looking at a rather small selection of alternatives, most rather new/ rare, so you will be among the first to make experiences with them (and end up finding and/ or having to fix bugs)
- expect having to experiment (and waste money) on finding the 'best' gear (cards, pigtails, antennas), you're doing a one-off 'prototype', you will purchase bad/ unfitting stuff, again and again.
- expect to encounter oversized cards, which might not physically fit on your board.
- insert advice about AP usage on x86_64 here
- expect prices to be considerably higher than be200 or mt7922
A better solution would be connecting an OpenWrt supported wireless AP/ router via ethernet.
Could you suggest examples of such cards? I'm using m.2 ngff to pci-e x1 adapter because wi-fi module passed through from pve host to openwrt vm, so I think there will be no problem with the size and cooling.
I very much think there will.
Could you share links to some examples? Unfortunately, I do not yet understand which modules you mean.
Search from AsiaRF, you'll find what you want, however if you are concerning about signal coverage without proper antennae you'll be disappointed. In fact MT7922 signal range isn't bad, but I guess you don't have good antenna causing bad signal.
I use it with a gigabyte antenna that comes with motherboards with mt7922. I suspect the problem is that the wall that is between the antenna and the phone is a 50cm concrete wall.
Such a 50cm concrete wall you can think about getting hard wire through the wall but not WiFi, I don't think 5 or 6GHz WiFi will be able to penetrate (even you use proper AP)
M2 has two pcie imterfaces, you can get 2 band module and not three band. Check asiarf , they sell kits with coax and antennas.