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RF Exposure (MPE) Calculator

Perform a station evaluation to comply with FCC Part 1.1310 exposure limits.

Frequency (MHz)

Transmitter Power (W)

Operating Mode

Duty Cycle (0.01–1.0)

SSB Voice: ~20% typical duty cycle

Antenna Gain

Feedline Loss (dB)

Exposure Environment

Include ground reflection factor (2.56× power, recommended for HF)

Avg Power at Antenna: W

Avg EIRP (duty-cycle adjusted): W

FCC MPE Limit: mW/cm²

Minimum Safe Distance:

Per FCC OET Bulletin 65. Averaging time: 6 min (controlled) / 30 min (uncontrolled). Assumes far-field conditions. For near-field (antenna < 10m away) perform detailed analysis.