Hello, i have a Raspi 3B+ and try to connect to WIFI 5G.
The Access Point is OpenWRT and operate in AC mode, Channel 64 (5320 MHz). On the pi side: root@debian:~# cat /proc/device-tree/model ; echo " "; Raspberry Pi 3 Model B Plus Rev 1.3 root@debian:~# iwlist wlan0 scanning| grep Freq Frequency:2.412 GHz (Channel 1) Frequency:2.437 GHz (Channel 6) Frequency:2.437 GHz (Channel 6) Frequency:2.462 GHz (Channel 11) Frequency:2.462 GHz (Channel 11) Frequency:2.462 GHz (Channel 11) root@debian:~# iw reg get global country DE: DFS-ETSI (2400 - 2483 @ 40), (N/A, 20), (N/A) (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS (5725 - 5875 @ 80), (N/A, 13), (N/A) (5945 - 6425 @ 160), (N/A, 23), (N/A), NO-OUTDOOR (57000 - 66000 @ 2160), (N/A, 40), (N/A) phy#0 country 99: DFS-UNSET (2402 - 2482 @ 40), (6, 20), (N/A) (2474 - 2494 @ 20), (6, 20), (N/A) (5140 - 5360 @ 160), (6, 20), (N/A) (5460 - 5860 @ 160), (6, 20), (N/A) There is no Wifi 5G found. I have no idea what is wrong there.