One thing that I've found extremely useful is an android app called Wifi Analyser.
This has enabled me to look at wireless networks around me, both 2.5 and 5ghz, and to try and ensure that the channels that I'm using are separated from surrounding networks. It's also useful for spotting networks that have similar ssid's that may cause confusion when you're trying to connect devices such as a B2.
I've not checked but I'm sure that similar apps are available from the app store.
Mike