On the AR300M, changing WiFi settings in advanced mode sets the radio to 20 MHz channel 54 Mbps G mode. Then I use the “simple” interface to set it back to 40 MHz 300 Mbps N mode.
Feature: in the US or in Canada, output power can be raised to 23 dBm using Openwrt. It can also hide the SSID.
Thank you so much for the quality of your answers!
I hid the SSID so the neighbors won’t notice that I have two routers on 2.4 GHz (unless they use a wifi scanner). When I do “regular” internet stuff, I connect to my TP-Link router. When I need to use the VPN, I simply switch to the AR300M. No need to go through a configuration page. I love it!