Wifi Country Setting

I use the Raspberry Pi 3 to host my Hass.io installation. Unfortunately the regulatory domain for the wifi chip is set to a wrong country and I can not connect to my Wifi on channel 13.
What is the correct way to set the WIfi Country on this linux distribution?


I have not used Wi-Fi, but here are the official network instructions for that.

On Raspian the country is set with raspi-config. I do not know about Hassio.

Thanks for this link. The wifi instructions unfortunately do not mention the country settings. The raspi-config does not exist on Hassio.

Was this discovered in the meantime?

Is this possible now?