Basic Qualification · B-002 Operating and procedures · B-002-008-003
What voice signal, transmitted three times, signifies distress?
- A EMERGENCY
- B HELP
- C MAYDAY
- D SOS
Correct answer: C — MAYDAY. From the official ISED question bank, verified word for word.
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
How to operate: calling, phonetics, Q-signals, repeaters, nets, emergency traffic, and the courtesies that keep a band usable.