Three easy steps: Here it goes root@kali:~# ifconfig wlan1 down root@kali:~# iw reg set BO root@kali:~# iwconfig wlan1 txpower 30 This is what it looks before wlan1 IEEE 802.11bg ESSID: off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry long limit:7 RTS thr: off Fragment thr: off Encryption key: off Power Management: off This is what it looks after after : wlan1 IEEE 802.11bg ESSID: off/any Mode:Managed Access Point: Not-Associated Tx-Power=30 dBm Retry long limit:7 RTS thr: off Fragment thr: off Encryption key: off Power Management: off mine is wlan1 as internal is wlan0 yours may well be wlan0 so just swap wlan1````for ````wlan0 in your own setup.