Basic Qualification · B-003 Station assembly, practice and safety · B-003-015-001
Why can a modern digital radio system transmit voice and images, not just data?
- A Digital protocols can fall back to analog as needed
- B Digital signals are continuously variable signals
- C Modern transceivers have the necessary high efficiency amplifiers
- D Any analog information can be converted to digital data
Correct answer: D — Any analog information can be converted to digital data. From the official ISED question bank, verified word for word.
Why
Voice and images are naturally analog, meaning they change smoothly over time, but modern systems turn these smooth waves into streams of numbers that computers can process and send. 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.