Basic Qualification · B-002 Operating and procedures · B-002-008-003
Quel signal, prononcé trois fois, indique un message de détresse en phonie?
- AAU SECOURS
- BMAYDAY
- CSOS
- DURGENCE
Correct answer: B — MAYDAY. Question tirée de la banque officielle d'ISDE.
Why
The voice signal MAYDAY, spoken three times, is the universal call for immediate life-threatening distress in radio communications. The full explanation — and one for every question — is in Pro.
Practise this section
Operating and procedures is section B-002 of the Basic exam: How to operate: calling, phonetics, Q-signals, repeaters, nets, emergency traffic, and the courtesies that keep a band usable.
Drill B-002 — free, no account