RF Signal Detector And RF Wifi Signal Tracker , Detect Signal Range By Meter , are used for detecting Radio Frequency Signal. Download RF Signal Detector monitor your Mobile and WiFi Signal Strength in an instant! RF ? Radio frequency (RF) is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 GHz to as low as 9 kHz. WiFi network access points identified, Radio frequency refers to an oscillation