**[W/m²] = (10^(**

S

S

**p**[dBm]-

**G**[dBi]) / 1000) * ((4 *

**Pi**) / (

**Lambda**[m]²))

Remarks:

G = Antennagain

Lambda = Wavelength

Pi = 3,1415

**Example:**

Say your have a reading of

**-40dBm**at

**950MHz**with a HyperLOG 7025 antenna (which offers a gain of

**4,9dBi**at 950MHz). The result is:

**0,000.004.08W/m²**or

**4,08µW/m²**