Visual explanation
The Morse symbol system
Each category uses the same dots, dashes, and timing rules, but serves a different purpose in written or operating communication.
LettersA–Z
Twenty-six rhythms used to spell ordinary language.
Numbers0–9
Ten regular five-mark patterns for numerical information.
Punctuation10 common marks
Longer patterns that add sentence structure and notation.
ProsignsOperating signals
Continuous patterns that control message handling.
Special signalsSOS, CQ, HELP
Recognized patterns or complete words used in practical contexts.
REFERENCE TABLE
Letters, numbers, and operating signals
Select an entry to inspect its pattern, meaning, and timing in sound, light, or vibration.LETTERS
A
.-The letter A in International Morse Code.INTERACTIVE SIGNAL
Experience A as a Morse signal
A
.-Choose a signal output, then press Play.
STANDARD TIMING
Timing shared by every Morse symbol
Every Morse message uses the same 1–3–3–7 timing relationship.- Dot
1 unitOne unit of signal.
- Dash
3 unitsThree units of signal.
- Letter gap
3 unitsThree units of silence.
- Word gap
7 unitsSeven units of silence.