Basic Qualification · B-002 Operating and procedures · B-002-005-009

Which of the following describes full break-in CW (QSK)?

1. A An operator must activate a manual send/receive switch before and after every transmission
2. B Stations wishing to break in must send the Morse code signal "BK"
3. C Incoming signals are received between transmitted dots and dashes
4. D Automatic keyers are used instead of hand keys

Correct answer: C — Incoming signals are received between transmitted dots and dashes. From the official ISED question bank, verified word for word.

Why

Full break-in, or QSK, means your radio switches so quickly that you can hear other stations between the tiny dots and dashes you are sending, allowing for natural conversation without waiting for a full pause. 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.

Drill B-002 — free, no account · All B-002 questions