Basic Qualification · B-002 Operating and procedures · B-002-008-004
Quel est le signal de détresse approprié en code Morse?
- ASOS
- BCQD
- CQRRR
- DMAYDAY
Correct answer: A — SOS. Question tirée de la banque officielle d'ISDE.
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
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