Basic Qualification · B-002 Operating and procedures · B-002-006-009
What does "RST 579" mean in a Morse code contact?
- A Your signal is fairly readable, fair strength, and with perfect tone
- B Your signal is barely readable, moderately strong, and with a faint ripple
- C Your signal is perfectly readable, moderately strong, and with perfect tone
- D Your signal is perfectly readable, weak strength, and with perfect tone
Correct answer: C — Your signal is perfectly readable, moderately strong, and with perfect tone. From the official ISED question bank, verified word for word.
Why
In Morse code, the RST report uses three numbers to describe your signal: readability, strength, and tone. 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.