I have an RT-N16 running TomatoUSB for about two years now, and recently it developed a weird issue, refusing to accept connections on channels 7, 8, 9 and 10.
Tried with two notebooks, iPhone and iPad, all of them were unable to connect. I can use all other channels, including 11, with full bandwidth, no problems at all. inSSIDer detects the router on the problematic channels with the same strenght of the good ones.
Thinking about some mysterious interference, I tried using these channels from another router I have, and was able to connect with no issues.
Never seen nothing like this. Any ideas?
Thanks in advance.