Radio TX Power vs Advertised TX Power
Radio TX Power is the strength of the transmitted signal (in dBm). For our beacons it goes from -40 to +4 dBm. The Radio TX Power impacts on the transmission distance: the higher the Radio TX Power, the longer the distance.
The Advertised TX Power is the Calibrated RSSI (Received Signal Strength Indicator), i.e. the received power measured at a reference distance, that is 0 mt for Eddystone and 1 mt for iBeacon packets. By default, the Calibrated RSSI is automatically scaled when Radio TX power is modified, so that the proximity estimation is not impacted.
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