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This calculator shows the theoretical attenuation with no terrain considerations. Again, you can enter a value for Distance and see the Attenuation, or alternatively enter a value for Attenuation, to see the maximum Distance.

Attenuation = 36.6 + 20 x log(D) + 20 x log(F)

 

F - Frequency


(MHz)

 

D - Transmission distance




A - Attenuation (dB)