|Your router might be sharing a channel with a strong nearby signal from a neighbour. If so switch it from Auto and select another channel (1, 6 and 11 preferred to prevent overlap). If you are unsure how to do this let us know.|
This is one of several freebies which will tell you who locally is using which channel.
It is only the "channel number" and "signal quality" that you need.
Always pop back and let us know the outcome - thanks