Question
What stations are subject to the FCC rules on RF exposure?
Answer Options
- A) All commercial stations; amateur radio stations are exempt
- B) Only stations with antennas lower than one wavelength above the ground
- C) Only stations transmitting more than 500 watts PEP
- D) All stations with a time-averaged transmission of more than one milliwatt
Correct Answer: D
Explanation
The FCC rules regarding RF exposure apply to all services, including amateur radio. 47 CFR §1.1307(b)(3)(i) establishes power thresholds below which a routine environmental evaluation is not required (the exemption criteria). This is defined at the input power to the antenna.
However, the general rule is that all stations with a time-averaged transmission of more than one milliwatt are subject to the FCC rules on RF exposure. The one-milliwatt level is the base threshold, though the actual power at which a routine evaluation is required is much higher and varies by band as described in OET Bulletin 65 (e.g., 50W PEP or higher on HF bands). See also G0A06 - What must you do if your station fails to meet the FCC RF exposure exemption criteria?
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