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سؤال 505

Which of the following determines ground losses for a ground-mounted vertical antenna operating on HF?

  1. The standing wave ratio
  2. Distance from the transmitter
  3. Soil conductivityپاسخ درست
  4. Take-off angle

توضیح

Return currents from a ground-mounted vertical flow through the soil near the antenna, and the power lost there depends on how well that soil conducts. Highly conductive ground such as damp, salty soil dissipates far less than dry sand or rock; SWR, distance, and take-off angle do not set the loss.

ادامهٔ این آزمون

شروع تمرین
سؤال 505: Which of the following determines ground losses for a… · FCC Amateur Extra Class (Element 4) · Questena