Wondering if anyone can explain a simple way to decide where the signal level is low enough in a building to consider installing a second WiFi access point using the same SSID but on a separate channel, connected via ethernet. Can you use a wifi scanner program to look at signal, noise ratios in different locations, and if so, what is considered an appropriate level to justify putting in a second AP?
For instance I have noticed in our lounge I can see signal -46, noise -92, but in the bedroom it has dropped to signal -65, noise -92. Our current AP is a 2nd gen. Airport Extreme.
thanks if anyone can help with advice.