What stations are subject to the FCC rules on RF exposure?
The correct answer is D: All stations with a time-averaged transmission of more than one milliwatt. The stations that are subject to the FCC rules on RF exposure are all stations with a time-averaged transmission of more than one milliwatt. Any station transmitting more than 1 mW average power is subject to RF exposure rules. For amateur radio operators, this means virtually all stations. Understanding this helps ensure compliance.
Exam Tip
Subject to RF exposure rules = all stations with time-averaged transmission > 1 mW. Think 'R'F 'E'xposure 'R'ules = 'R'equired for 'E'veryone over '1' mW. Any station transmitting more than 1 mW average power is subject to RF exposure rules. Not amateur exemption, not antenna height, not 500W - just > 1 mW.
Memory Aid
"Subject to RF exposure rules = all stations with time-averaged transmission > 1 mW. Think 'R'F 'E'xposure 'R'ules = '1' mW threshold. Any station transmitting more than 1 mW average power is subject to RF exposure rules. Very low threshold."
Real-World Application
FCC RF exposure rules: Any station with a time-averaged transmission of more than one milliwatt (1 mW) is subject to RF exposure rules. This means virtually all amateur stations are subject - even low-power stations. The threshold is very low (1 mW), so most stations need to evaluate RF exposure. This is the criterion - all stations over 1 mW are subject.
FCC Part 97.13Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Amateur stations aren't exempt - they're subject to RF exposure rules if transmitting more than 1 mW. Amateur exemption is wrong.
Option B: Incorrect. Stations with antennas lower than one wavelength aren't the only ones subject - all stations over 1 mW are subject. Antenna height isn't the criterion.
Option C: Incorrect. Stations transmitting more than 500 watts PEP aren't the only ones subject - all stations over 1 mW are subject. 500 watts isn't the threshold.
题目解析
The correct answer is D: All stations with a time-averaged transmission of more than one milliwatt. The stations that are subject to the FCC rules on RF exposure are all stations with a time-averaged transmission of more than one milliwatt. Any station transmitting more than 1 mW average power is subject to RF exposure rules. For amateur radio operators, this means virtually all stations. Understanding this helps ensure compliance.
考试技巧
Subject to RF exposure rules = all stations with time-averaged transmission > 1 mW. Think 'R'F 'E'xposure 'R'ules = 'R'equired for 'E'veryone over '1' mW. Any station transmitting more than 1 mW average power is subject to RF exposure rules. Not amateur exemption, not antenna height, not 500W - just > 1 mW.
记忆口诀
Subject to RF exposure rules = all stations with time-averaged transmission > 1 mW. Think 'R'F 'E'xposure 'R'ules = '1' mW threshold. Any station transmitting more than 1 mW average power is subject to RF exposure rules. Very low threshold.
实际应用示例
FCC RF exposure rules: Any station with a time-averaged transmission of more than one milliwatt (1 mW) is subject to RF exposure rules. This means virtually all amateur stations are subject - even low-power stations. The threshold is very low (1 mW), so most stations need to evaluate RF exposure. This is the criterion - all stations over 1 mW are subject.
错误选项分析
Option A: Incorrect. Amateur stations aren't exempt - they're subject to RF exposure rules if transmitting more than 1 mW. Amateur exemption is wrong. Option B: Incorrect. Stations with antennas lower than one wavelength aren't the only ones subject - all stations over 1 mW are subject. Antenna height isn't the criterion. Option C: Incorrect. Stations transmitting more than 500 watts PEP aren't the only ones subject - all stations over 1 mW are subject. 500 watts isn't the threshold.
知识点
FCC RF exposure rules, Time-averaged transmission, More than one milliwatt, Subject to rules
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.