2022-02-04 18:21:36 Will Son

Hi Joe,

In some cases, WiFi channel could be different.

Please check your WiFi router and find the frequency range, then check the channel of the RPi with the below command.

$ iw wlan0 info

You'll see something like below (in my case, I'm using 5GHz Wifi)

Interface wlan0
	ifindex 3
	wdev 0x1
	addr xx:xx:xx:xx:xx:xx
	ssid Zone_6A_5G
	type managed
	wiphy 0
	channel 149 (5745 MHz), width: 80 MHz, center1: 5775 MHz
	txpower 31.00 dBm

Depending on your location, you might need to change the country code then reboot the RPi to change the WiFi frequency range

$ sudo nano /etc/default/crda

Append your country code after the "REGDOMAIN="

For example,

REGDOMAIN=KR

Then save and reboot the Raspberry Pi and check if the WiFi channel is updated.

Thank you.