Definition of Received signal level

In telecommunications, and particularly in radio, signal strength transmitted signal is being received, measured, or predicted, at a reference point that is a significant distance from the transmitting antenna. It may also be referred to as received signal level or field strength. Typically, this is measured as signal electric field strength of voltage per length or signal power received by a reference antenna.  Higher powered transmissions such as broadcasting use units of dB-millivolts per metre (dBmV/m). Very low-power uses such as mobile phones are most often expressed in dB-microvolts per metre (dBµV/m) or in decibels above a reference level of one milliwatt (eg − 80 dBm).