When must an RF exposure evaluation be performed on an amateur station operating on 80 meters?
An evaluation must always be performed✓Correct answer
When the ERP of the station is less than 10 watts
When the station’s operating mode is CW
When the output power from the transmitter is less than 100 watts
Explanation
The official pool answer puts the requirement categorically, whereas 47 CFR 1.1307(b)(1)(i) offers three routes: establish that an exemption applies, prepare an evaluation, or prepare an Environmental Assessment. It remains the best of the four choices, because the other three invoke thresholds the rules no longer contain — the band-and-power table that exempted 80 meter stations at or below 500 watts PEP was deleted, and neither operating mode nor a stated transmitter output figure appears anywhere in the present criteria. The one surviving exemption turns on separation distance rather than on power: on 80 meters its threshold runs to tens of kilowatts ERP, and it may be claimed only where nobody comes closer than λ / 2π, about 13 meters.