Basic Qualification · B-002 Operating and procedures · B-002-008-004
What is the correct distress signal in Morse code?
- A QRRR
- B MAYDAY
- C SOS
- D CQD
Correct answer: C — SOS. From the official ISED question bank, verified word for word.
Why
SOS is the correct distress signal in Morse code because it consists of three dots, three dashes, and three dots, a pattern chosen specifically for its simplicity and ease of sending or hearing under stress. 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.