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Question 20241
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Principles of Communication: Propagation MCQ

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PropagationMediumQuestion 20241

Question

A TV tower has height 400 m. The maximum LOS range (R = 6400 km) is approximately:
  1. A
    71.5 km
    Correct
  2. B
    113 km
  3. C
    226 km
  4. D
    50 km

Correct answer

71.5 km

Explanation

d = √(2 × 6.4×10⁶ × 400) = √(5.12×10⁹) ≈ 71,554 m ≈ 71.5 km. To cover a city of 100 km radius, a taller tower or relay stations are needed.

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