How can you make sure your station stays in compliance with RF safety regulations?
The correct answer is B: By re-evaluating the station whenever an item in the transmitter or antenna system is changed. You can make sure your station stays in compliance with RF safety regulations by re-evaluating whenever an item in the transmitter or antenna system is changed. Any change (power, frequency, antenna type, location, etc.) can affect RF exposure, so you must reassess. For amateur radio operators, this is an ongoing responsibility. Understanding this helps maintain compliance as your station evolves. RF exposure assessment isn't a one-time thing.
Exam Tip
Stay compliant = re-evaluate when station changes. Think 'R'e-evaluate = 'R'equired when 'R'eplaced/changed. Any change to transmitter or antenna system requires reassessment. Not about FCC notification or SWR - about exposure assessment.
Memory Aid
"Stay compliant = re-evaluate when station changes. Think 'R'e-evaluate = 'R'equired when changed. Any change to transmitter or antenna system requires RF exposure reassessment. Ongoing responsibility."
Real-World Application
You upgrade your antenna from a dipole to a 3-element Yagi with more gain. This changes your RF exposure because the beam pattern concentrates power in one direction. You must re-evaluate your RF exposure to ensure you still comply with limits. Any change - power, antenna, location - requires reassessment.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. You don't need to inform the FCC of every change - you only need to ensure compliance. The FCC doesn't require notification of routine station changes.
Option C: Incorrect. Low SWR is good for efficiency but doesn't ensure RF exposure compliance. Exposure depends on power, frequency, distance, and antenna pattern, not just SWR.
Option D: Incorrect. Since A and C are not requirements, 'all of the above' cannot be correct. Only re-evaluation when changes occur is required.
题目解析
The correct answer is B: By re-evaluating the station whenever an item in the transmitter or antenna system is changed. You can make sure your station stays in compliance with RF safety regulations by re-evaluating whenever an item in the transmitter or antenna system is changed. Any change (power, frequency, antenna type, location, etc.) can affect RF exposure, so you must reassess. For amateur radio operators, this is an ongoing responsibility. Understanding this helps maintain compliance as your station evolves. RF exposure assessment isn't a one-time thing.
考试技巧
Stay compliant = re-evaluate when station changes. Think 'R'e-evaluate = 'R'equired when 'R'eplaced/changed. Any change to transmitter or antenna system requires reassessment. Not about FCC notification or SWR - about exposure assessment.
记忆口诀
Stay compliant = re-evaluate when station changes. Think 'R'e-evaluate = 'R'equired when changed. Any change to transmitter or antenna system requires RF exposure reassessment. Ongoing responsibility.
实际应用示例
You upgrade your antenna from a dipole to a 3-element Yagi with more gain. This changes your RF exposure because the beam pattern concentrates power in one direction. You must re-evaluate your RF exposure to ensure you still comply with limits. Any change - power, antenna, location - requires reassessment.
错误选项分析
Option A: Incorrect. You don't need to inform the FCC of every change - you only need to ensure compliance. The FCC doesn't require notification of routine station changes. Option C: Incorrect. Low SWR is good for efficiency but doesn't ensure RF exposure compliance. Exposure depends on power, frequency, distance, and antenna pattern, not just SWR. Option D: Incorrect. Since A and C are not requirements, 'all of the above' cannot be correct. Only re-evaluation when changes occur is required.
知识点
RF exposure compliance, Station changes, Re-evaluation, RF safety
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.