Which system is most likely to be affected...

Question 1 of 2707066636eec28f7522a1c51ce70

Which system is most likely to be affected by atmospheric disturbances?

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Question 1 of 27070

Q

Which system is most likely to be affected by atmospheric disturbances?

🔍 Key Concepts

• Propagation characteristics of MF/HF vs VHF vs satellite systems • Effect of atmospherics (static, lightning, storms) on different frequency bands • Difference between line-of-sight VHF, ground/sky wave MF/HF, and satellite services

💭 Think About

• Which of these systems operates in the frequency range where sky-wave and ionospheric effects are important? • Which services on the list are primarily digital/satellite-based and designed to be relatively resistant to local static and noise? • Think about which band radio operators traditionally complain about during thunderstorms and high static conditions.

✅ Before You Answer

• Identify which option(s) use the MF/HF bands rather than VHF or satellite links • Consider which system relies on ionospheric propagation, making it more vulnerable to atmospheric noise and disturbances • Verify which listed services (INMARSAT, SafetyNET) are actually satellite-based, and compare their susceptibility to static with conventional radio.