Amateur Radio RF Exposure Calculator

RF Exposure Assessment Calculator

RF Exposure Assessment - OET-65 Quick Calculate

Evaluated On

This is the quick calculator for completing an OET-65 RF exposure assessment and intended for users who already understand the various attributes required for evaluation. For a step-by-step walk-through of the assessment, go here.

Station Setup Information
Radio Make/Model
Power Output at Antenna in Watts The power out of the radio less feedline losses before antenna gain
Antenna Type
Antenna Gain Express gain as gain over an isotropic (dBI)* antenna. For information published as gain over a dipole (dBD) subtract 2.14 from dBD for this value.*
Duty Cycle
Transmit Time Number only between 1 and 30
Receive Time after Transmit (and then repeat) Number only between 1 and 30
Frequency Enter the frequency in MHz in the format NNN.NNN.
Include Ground-Effect Reflections in Calculations

Raw Station Data
Station Max ERP		W
Uncontrolled Exposure Information
Maximum Allowed Power Density		$\frac{mW}{{cm}^{2}}$
Minimum Safe Distance		ft
Minimum Safe Distance		m
Duty/Time-Averaged EIRP		W
Controlled Exposure Information
Maximum Allowed Power Density		$\frac{mW}{{cm}^{2}}$
Minimum Safe Distance		ft
Minimum Safe Distance		ft
Duty/Time-Averaged EIRP		W