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Electrical Field Strength Conversion Table

In the far field, Zo = 120π (377Ω)

Field Strength Calculation:

The field strength is calculated by adding the Antenna Factor and Cable Factor, and subtracting the Amplifier Gain from the measured reading. The basic equation is as follows:

FS = RA + AF + CF - AG

Where:

FS = Field Strength
RA = Receiver Amplitude
AF = Antenna Factor
CF = Cable Attenuation Factor
AG = Amplifier Gain

1 Gauss = 100 microTesla = 80 Amps/meter

Electrical Field Strength Magnetic Field Strength
dBμV/m μV/m dBμA/m μA/m picogauss picoTesla
  0 1.0 -51.5   0.00265   33.1 0.0033
  5   1.78 -46.5 0.0047   58.8 0.0059
10    3.162   41.5 0.0084 105.0 0.0105
15    5.623   36.5 0.0149 186.2 0.0186
20  10.000   31.5 0.0265 331.5 0.0331
        nanogauss  
25 17.8 -26.5 0.0472 0.590 0.0590
30   31.62 -21.5 0.0839 1.048 0.1048
35   56.23 -16.5 0.1492 1.865 0.1865
37   70.79 -14.5 0.1878 2.347 0.2347
40 100.00 -11.5 0.2652 3.315 0.3315
  mV/m        
50   0.316 -1.5   0.839     10.48   1.048
60   1.000   8.5   2.652     33.15   3.315
70   3.162 18.5   8.388 104.8 10.485
80 10.000 28.5 26.525 331.5 33.156
      mA/m μgauss nanoTesla
  90     31.6 38.5   0.0839     1.048   0.1048
100   100.0 48.5   0.2652     3.315   0.3315
110   316.2 58.5   0.8388 10.48 1.048
120 1000.0 68.5 2.652 33.15 3.315
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