Compliance with MPE, or Maximum Permissible...

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Question 1 of 20TnUWyUoU3KQ7ceVXsg6b

Compliance with MPE, or Maximum Permissible Exposure to RF levels (as defined in FCC Part 1, OET Bulletin 65) for “controlled” environments, are averaged over _______ minutes, while “uncontrolled” RF environments are averaged over ______ minutes.

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Question 1 of 20

TnUWyUoU3KQ7ceVXsg6b

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🔍 Key Concepts

• MPE (Maximum Permissible Exposure) limits are different for people who are trained/aware vs. the general public • Controlled environment = workers who know about RF hazards and have training/supervision • Uncontrolled environment = general public, bystanders, passengers, no specific RF training

💭 Think About

• Should trained personnel be allowed to be exposed to the same RF level for a longer time or shorter time than the general public? How does that affect the averaging period? • Think about safety margins: does the public usually get stricter or more lenient limits? How would that relate to averaging over more or fewer minutes? • Between 6 and 30 minutes, which sounds like a more conservative averaging period for the general public, and which better fits workers in a known RF area?

✅ Before You Answer

• Confirm which environment (controlled vs. uncontrolled) is associated with workers with knowledge and training • Confirm which environment is associated with the general public or ship passengers • Match the longer averaging time with the more conservative public exposure and the shorter averaging time with the trained/controlled environment

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