Signal Strength Display Units
You can choose to display Signal Strength in terms of Percent or in dBm. Most
users will choose the default value of Percent. Advanced users may choose dBm,
and the Signal Strength on the Status, Site Survey, and Linktest pages will
reflect this. In addition, the Signal Quality display will be replaced by Noise
Level (also shown in dBm), and the Overall Link Quality will be replaced by the
Signal to Noise Ratio.