Deep Dive: G0A02
The correct answer is D: All these choices are correct. What is used to determine RF exposure from a transmitted signal includes: its duty cycle, its frequency, and its power density. All three factors are used to calculate RF exposure. For amateur radio operators, this is how RF exposure is evaluated. Understanding this helps ensure compliance with RF safety regulations.
Why Other Answers Are Wrong
Option A: While correct, this is incomplete. Frequency and power density are also used. Option B: While correct, this is incomplete. Duty cycle and power density are also used. Option C: While correct, this is incomplete. Duty cycle and frequency are also used.
Exam Tip
All three determine RF exposure: duty cycle, frequency, power density. When all listed factors are used to determine RF exposure, 'all of the above' is usually the answer. All are used in RF exposure calculations.
Memory Aid
All three determine RF exposure: Duty cycle, Frequency, Power density. Think 'A'll 'R'F 'E'xposure 'F'actors. All three factors are used to calculate RF exposure. Essential for RF safety evaluation.
Real-World Example
RF exposure evaluation: (1) Duty cycle - how much time the transmitter is on (affects average power), (2) Frequency - different frequencies have different absorption rates, (3) Power density - the power per unit area at a given distance. All three factors are used to calculate RF exposure. This is how RF exposure is determined.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G0A
Reference: FCC Part 97.13
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G0A topic.