Therefore, -50 dBm is better than -60 dBm. A greater negative value (in dBm) indicates a weaker signal. Likewise, if a transmitter is moved farther away, signal strength at the receiving antenna decreases. If a distant transmitter is moved closer to a receiver, the strength of the transmitted signal at the receiving antenna increases. Measuring the signal strength at the receiving antenna is one way to determine the quality of a communication link. It is an approximate value for signal strength received on an antenna. The Received Signal Strength Indicator (RSSI) measures the amount of power present in a radio signal.
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