Raspberry pi 4 can't find 5ghz wifi

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Firstly, you must have a 2.4G/5G dual band routers.

1. Make sure you have set the correct country code using raspi configuration.

sudo raspi-config

Raspi-config-wifi-1.png

select 'Localisation Options' and press 'ENTER'

Raspi-config-wifi-2-1.png

select 'L4' and press 'ENTER'

Raspi-config-wifi-2.png

select the correct country then press 'ENTER'

Raspi-config-wifi-3.png

2. Use the 'iwlist channel' command to view the currently allowed frequency bands to be connected. These values are different for different countries.

iwlist channel

Iwlist-show.jpg

3. Check the frequency band settings of your router 5G WIFI

Routers-5G-setting.jpg

For this router, only '149,153,157 or 161' channel can be selected if we want to use 5G WIFI, or can't find 5G wifi in Pi 4 SSID list.

4. Then you can find the 5G wifi on your raspberry pi SSID list

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Anonymous user #2

3 months ago
Score 0++
worked! changing to china worked for me for channel 149 sent from my xiaomi/redmi phone hotspot! :D

Walker

3 months ago
Score 0++
Thanks

Anonymous user #1

8 months ago
Score 0++
Thanks, this seemed to stop the wifi dropping for me.

Walker

8 months ago
Score 0++
You're welcome