jon@jonnixbox:~$ iw reg set BO
command failed: Operation not permitted (-1)
jon@jonnixbox:~$ sudo !!
sudo iw reg set BO
jon@jonnixbox:~$ sudo iwconfig wlan0 txpower 17 fixed
Error for wireless request "Set Tx Power" (8B26) :
    SET failed on device wlan0 ; Invalid argument.