What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?
The correct answer is C: Take precautions to ensure that the antenna cannot be pointed in their direction when they are present. What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna is to take precautions to ensure that the antenna cannot be pointed in their direction when they are present. You must prevent the antenna from being aimed at neighbors when they're nearby. For amateur radio operators, this is required for compliance. Understanding this helps ensure neighbor safety.
Exam Tip
Neighbor exceeds exposure = take precautions to prevent antenna pointing at them. Think 'N'eighbor 'E'xposure = 'N'ever 'E'xpose (prevent pointing). You must prevent antenna from being aimed at neighbors when they're present. Not antenna change, not higher F/B - just prevent pointing at neighbors.
Memory Aid
"Neighbor exceeds exposure = take precautions to prevent antenna pointing at them. Think 'N'eighbor 'E'xposure = 'N'ever 'E'xpose. You must prevent antenna from being aimed at neighbors when they're present. Required for compliance."
Real-World Application
Evaluation shows neighbor might exceed RF exposure limits from your directional antenna's main lobe. You must take precautions: use antenna rotator limits, physical stops, or operating restrictions to ensure the antenna cannot be pointed in their direction when they are present. This is required for compliance - prevent exposure by preventing antenna pointing. This ensures neighbor safety.
FCC Part 97.13Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Changing to non-polarized antenna with higher gain doesn't solve the problem - it might make it worse. Antenna change isn't the solution.
Option B: Incorrect. Using antenna with higher front-to-back ratio doesn't solve the problem - the main lobe still exists. Higher F/B ratio isn't the solution.
Option D: Incorrect. Since A and B are not correct, 'all of the above' cannot be correct. Only preventing antenna from pointing at neighbors is required.
题目解析
The correct answer is C: Take precautions to ensure that the antenna cannot be pointed in their direction when they are present. What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna is to take precautions to ensure that the antenna cannot be pointed in their direction when they are present. You must prevent the antenna from being aimed at neighbors when they're nearby. For amateur radio operators, this is required for compliance. Understanding this helps ensure neighbor safety.
考试技巧
Neighbor exceeds exposure = take precautions to prevent antenna pointing at them. Think 'N'eighbor 'E'xposure = 'N'ever 'E'xpose (prevent pointing). You must prevent antenna from being aimed at neighbors when they're present. Not antenna change, not higher F/B - just prevent pointing at neighbors.
记忆口诀
Neighbor exceeds exposure = take precautions to prevent antenna pointing at them. Think 'N'eighbor 'E'xposure = 'N'ever 'E'xpose. You must prevent antenna from being aimed at neighbors when they're present. Required for compliance.
实际应用示例
Evaluation shows neighbor might exceed RF exposure limits from your directional antenna's main lobe. You must take precautions: use antenna rotator limits, physical stops, or operating restrictions to ensure the antenna cannot be pointed in their direction when they are present. This is required for compliance - prevent exposure by preventing antenna pointing. This ensures neighbor safety.
错误选项分析
Option A: Incorrect. Changing to non-polarized antenna with higher gain doesn't solve the problem - it might make it worse. Antenna change isn't the solution. Option B: Incorrect. Using antenna with higher front-to-back ratio doesn't solve the problem - the main lobe still exists. Higher F/B ratio isn't the solution. Option D: Incorrect. Since A and B are not correct, 'all of the above' cannot be correct. Only preventing antenna from pointing at neighbors is required.
知识点
Neighbor RF exposure, Directional antenna, Main lobe, Prevent pointing at neighbors
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.