Which of the following types of equipment are exempt from RF exposure evaluations?
The correct answer is C: Hand-held transceivers sold before May 3, 2021. Hand-held transceivers sold before May 3, 2021 are exempt from RF exposure evaluations under FCC rules. This is a grandfather clause for older equipment.
The FCC exempts certain low-power or older equipment from RF exposure evaluation requirements. Hand-held transceivers sold before May 3, 2021, are exempt because they were manufactured and sold before the current evaluation requirements took effect. This is a grandfather provision. Newer hand-helds (sold after May 3, 2021) may require evaluation depending on their power and other factors. This exemption recognizes that older, lower-power hand-helds generally pose minimal exposure risk and were sold before current requirements.
Exam Tip
RF exposure exemption = Hand-helds before May 3, 2021. Remember: Hand-held transceivers sold before May 3, 2021, are exempt from RF exposure evaluations. This is a grandfather clause for older equipment.
Memory Aid
"**R**F **E**xposure **E**xemption = **H**and-**H**eld **B**efore **M**ay **3**, **2**021 (think 'REE = HHBM3/2021')"
Real-World Application
You have a hand-held transceiver you bought in 2020. This transceiver is exempt from RF exposure evaluation because it was sold before May 3, 2021. However, if you buy a new hand-held in 2024, it may require evaluation depending on its specifications. The exemption applies to the sale date, not the power level.
FCC Part 97.13Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Transceivers with less than 7 watts aren't automatically exempt. The exemption is based on the sale date (before May 3, 2021), not just power level.
Option B: Incorrect. Antennas that radiate only in the near field aren't exempt. Near-field radiation still requires evaluation.
Option D: Incorrect. Dish antennas less than one meter aren't exempt. Size alone doesn't create an exemption.
题目解析
The correct answer is C: Hand-held transceivers sold before May 3, 2021. Hand-held transceivers sold before May 3, 2021 are exempt from RF exposure evaluations under FCC rules. This is a grandfather clause for older equipment. The FCC exempts certain low-power or older equipment from RF exposure evaluation requirements. Hand-held transceivers sold before May 3, 2021, are exempt because they were manufactured and sold before the current evaluation requirements took effect. This is a grandfather provision. Newer hand-helds (sold after May 3, 2021) may require evaluation depending on their power and other factors. This exemption recognizes that older, lower-power hand-helds generally pose minimal exposure risk and were sold before current requirements.
考试技巧
RF exposure exemption = Hand-helds before May 3, 2021. Remember: Hand-held transceivers sold before May 3, 2021, are exempt from RF exposure evaluations. This is a grandfather clause for older equipment.
记忆口诀
**R**F **E**xposure **E**xemption = **H**and-**H**eld **B**efore **M**ay **3**, **2**021 (think 'REE = HHBM3/2021')
实际应用示例
You have a hand-held transceiver you bought in 2020. This transceiver is exempt from RF exposure evaluation because it was sold before May 3, 2021. However, if you buy a new hand-held in 2024, it may require evaluation depending on its specifications. The exemption applies to the sale date, not the power level.
错误选项分析
Option A: Incorrect. Transceivers with less than 7 watts aren't automatically exempt. The exemption is based on the sale date (before May 3, 2021), not just power level. Option B: Incorrect. Antennas that radiate only in the near field aren't exempt. Near-field radiation still requires evaluation. Option D: Incorrect. Dish antennas less than one meter aren't exempt. Size alone doesn't create an exemption.
知识点
RF exposure exemption, Hand-held transceivers, May 3, 2021, Grandfather clause
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.