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سؤال 409

What precaution should be taken if you install an indoor transmitting antenna?

  1. Locate the antenna close to your operating position to minimize feed-line radiation
  2. Position the antenna along the edge of a wall to reduce parasitic radiation
  3. Make sure that MPE limits are not exceeded in occupied areasپاسخ درست
  4. Make sure the antenna is properly shielded

توضیح

An indoor antenna puts occupied space very close to the radiator, and power density rises steeply as distance shrinks, so the controlling question is whether the maximum permissible exposure limits are met in the areas where people actually are. Shielding an antenna would prevent it from radiating at all, and neither placement trick in the other choices addresses exposure.

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شروع تمرین
سؤال 409: What precaution should be taken if you install an indoor… · FCC General Class (Element 3) · Questena