Basic Qualification · B-003 Station assembly, practice and safety · B-003-014-005
Comment appelle-t-on le circuit qui active l'émetteur automatiquement quand l'opérateur parle dans son microphone?
- AVXO
- BVCO
- CVFO
- DVOX
Correct answer: D — VOX. Question tirée de la banque officielle d'ISDE.
Why
VOX stands for voice-operated exchange, a circuit that senses your voice and flips the switch to transmit automatically so you do not need to press a button. The full explanation — and one for every question — is in Pro.
Practise this section
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account