Raspberry pi 4 can't find 5ghz wifi
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1. Make sure you have set the correct country code using raspi configuration.
sudo raspi-config
select 'Localisation Options' and press 'ENTER'
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
3. Check the frequency band settings of your router 5G WIFI
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