Basic Qualification · B-002 Operating and procedures · B-002-008-001
When may you use your amateur radio station to transmit an "SOS" or "MAYDAY"?
- A Only at specific times (at 15 and 30 minutes after the hour)
- B Only in case of a severe weather watch
- C In a life-threatening distress situation
- D Never
Correct answer: C — In a life-threatening distress situation. From the official ISED question bank, verified word for word.
Why
You may transmit "SOS" or "MAYDAY" only when your life or the life of another person is in immediate danger, as these signals are reserved for genuine emergencies where no other help is available. 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.