Which of the following systems is least...

Question 1 / 270701btkyPrcdTdjjSL8DQ5W

Question 1 of 270701btkyPrcdTdjjSL8DQ5W

Which of the following systems is least susceptible to atmospheric disturbances?

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Question 1 of 27070

Q

Which of the following systems is least susceptible to atmospheric disturbances?

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🔍 Key Concepts

• Propagation characteristics of MF, HF, and satellite (Inmarsat) systems • How atmospheric and ionospheric disturbances affect different frequency bands • The difference between terrestrial radio (MF/HF) and satellite-based services

💭 Think About

• Which of these services depends most on the ionosphere for long‑range communication, and which bypasses it? • How do thunderstorms, static, and solar activity typically affect MF and HF compared to satellite L‑band services? • Among the listed systems, which one is specifically designed to provide reliable service even when HF propagation is poor?

✅ Before You Answer

• Identify the frequency band each option uses (MF, HF, or satellite L‑band). • Recall which bands are most affected by ionospheric disturbances and atmospheric noise (especially static from thunderstorms). • Confirm which system in the list is primarily space‑segment (satellite) rather than relying on sky‑wave or ground‑wave propagation.

Question 1 of 27070

Q

Which of the following systems is least susceptible to atmospheric disturbances?

A

Inmarsat

B

NAVTEX

C

MF SITOR (NBDP)

D

HF SITOR (NBDP)

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Question 1 / 270701btkyPrcdTdjjSL8DQ5W

Question 1 of 270701btkyPrcdTdjjSL8DQ5W

Which of the following systems is least susceptible to atmospheric disturbances?

Back

Question 1 of 27070

Q

Which of the following systems is least susceptible to atmospheric disturbances?

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Propagation characteristics of MF, HF, and satellite (Inmarsat) systems • How atmospheric and ionospheric disturbances affect different frequency bands • The difference between terrestrial radio (MF/HF) and satellite-based services

💭 Think About

• Which of these services depends most on the ionosphere for long‑range communication, and which bypasses it? • How do thunderstorms, static, and solar activity typically affect MF and HF compared to satellite L‑band services? • Among the listed systems, which one is specifically designed to provide reliable service even when HF propagation is poor?

✅ Before You Answer

• Identify the frequency band each option uses (MF, HF, or satellite L‑band). • Recall which bands are most affected by ionospheric disturbances and atmospheric noise (especially static from thunderstorms). • Confirm which system in the list is primarily space‑segment (satellite) rather than relying on sky‑wave or ground‑wave propagation.