Basic Qualification · B-003 Station assembly, practice and safety · B-003-013-005
Why is FM voice best for local VHF/UHF radio communications?
- A It is more resistant to distortion caused by reflected signals
- B Its RF carrier stays on frequency better than the AM modes
- C It provides a good signal-to-noise ratio low RF signal levels
- D The carrier is not detectable
Correct answer: C — It provides a good signal-to-noise ratio low RF signal levels. From the official ISED question bank, verified word for word.
Why
FM voice works best for local VHF and UHF links because it keeps the audio clear even when the radio signal is weak, offering a strong voice quality compared to background static. The full explanation — and one for every question — is in Pro.
Practise this section
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.