Tag Archives: dbm

The unit of the RF signal. dB and dBm

When you are viewing RF-related documentation or logs, you often see a unit called dB and dBm. In fact, I did not use them differently until now. But I find that there are different meanings. Received Signal Strength Indicator: -49dBm The above shows the signal strength of Wi-Fi as part of the log when you… Read More »