The receive sensitivity values are generally rated in dBm, and are usually in the range of -40dBm to -80dBm. This is also known as the receive sensitivity. The Wi-Fi receiver has a range of power levels it can hear - the "listen power" in the diagram above. Wireless transmitter power is only one half of the connection. ![]() This is the scale that many network designers use to calculate if longer wireless links will work.Ī few examples of the transmit power levels in common Wi-Fi hardware is below:ġ0mW (10dBm): Laptop or smartphone, or very low cost Wi-Fi router.ġ00mW (20dBm): Indoor home or office router.ĥ00mW (1/2 Watt or 27dBm): Outdoor, long-distance focused routers. 10 milliwatts is 10 dBm 100 milliwatts is 20 dBm, and so on.
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