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السؤال 406

Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

  1. It affects the average exposure to radiationالإجابة الصحيحة
  2. It affects the peak exposure to radiation
  3. It takes into account the antenna feed line loss
  4. It takes into account the thermal effects of the final amplifier

الشرح

The exposure limits are stated as averages over a fixed time window, so what matters is how much energy is delivered across that window rather than the instantaneous peak. Duty cycle sets the fraction of that window during which the transmitter is actually radiating, so it sets the average exposure.

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السؤال 406: Why is duty cycle one of the factors used to determine safe… · FCC Technician Class (Element 2) · Questena