The calculator converts from radiated power in **dBuV/m** (deciBel microvolt-per-meter) **at 3 meters** to conducted power in **dBm** at the output of the transmitter.

## Example Calculation

In this example we compute the maximum transmitter power in dBm from the level of the radiated field measured at a distance of 3 meters away.

This transmit power is also known as the **Effective Isotropic Radiated Power** (**EIRP**).

The **Effective Radiated Power** (ERP) is given by

**ERP = EIRP – 2.15**

For frequencies above 960 MHz, the FCC stipulates a maximum radiation limit of 500 uV/m at 3 meter distance from the transmitter. Use this calculator to convert uV to dBuV.

500 uV/m equates to 54 dBuV/m.

A field strength value of 54 dBuV/m equates to a power level of -41.2 dBm at the transmitter.

**Output Power of Wholehouse FM Transmitter **

We can use this calculator to find the output transmit power of the Whole House FM transmitter.

The FCC report shows a maximum field-strength level of 43.5 dBuV/m in the FM band. This translates to an EIRP of **-51.7 dBm** at the output of the FM transmitter.