We have stock of gl-mifi and ar-150 on which we run the wifi chip in monitor mode.
I’m trying to reduce the txpower on the device. The reason for this is that I believe this may stop the wifi chipset from frying when our customers ignore our advice and plug the antenna in while the device is powered up. We don’t need any txpower in monitor mode as we are not transmitting any data.
When the wifi chip is in AP mode, I am able to successfully lower the wifi dBm setting either from the luci interface or /etc/config/wireless or iw commands. I have tested attaching/detaching antenna with device powered on when the txpower is set to 0dBm and I don’t appear to have fried the antenna. This is great!
However, as soon as I set the wifi chip to ‘monitor mode’ the txpower is automatically set to 18dBm (as shown by ‘iw wlan0 info’). No matter what I try, I can’t get it to accept a change to 0dBm. I know that the wifi chipset is bound by regulatory limitations in terms of txpower and channels. However, surely I am allowed to reduce the txpower to as little as I desire?
Any ideas as to what I can do to change this, or any workarounds, would be really appreciated. Thanks.