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Question 20264
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Principles of Communication: Satellite Communication MCQ

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Satellite CommunicationHardQuestion 20264

Question

The ratio of frequencies used for uplink and downlink in C-band satellite communication is typically:
  1. A
    Uplink higher than downlink (6/4 GHz)
    Correct
  2. B
    Downlink higher than uplink (4/6 GHz)
  3. C
    Both equal (4/4 GHz)
  4. D
    Uplink at 1 GHz, downlink at 10 GHz

Correct answer

Uplink higher than downlink (6/4 GHz)

Explanation

C-band: uplink = 5.925–6.425 GHz, downlink = 3.7–4.2 GHz. Higher uplink frequency (from powerful ground station) compensates for more path loss; the satellite's lower power amplifier benefits from lower downlink frequency.

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