Morse Code Basics: Dots, Dashes & Spacing
Learn the fundamental building blocks of Morse code: the dot (short signal), dash (long signal), and the spacing rules that separate symbols, characters, and words.
Detailed Explanation
What Is Morse Code?
Morse code is a character encoding scheme that represents each letter, digit, and punctuation mark as a unique sequence of two signals: a dot (short signal, .) and a dash (long signal, -). It was developed in the 1830s–1840s for electrical telegraph systems.
The Two Signals
| Signal | Name | Written | Duration |
|---|---|---|---|
| Short | Dot (dit) | . |
1 unit |
| Long | Dash (dah) | - |
3 units |
A dash is always exactly three times the duration of a dot.
Spacing Rules
Morse code uses three levels of spacing to separate elements:
Between dots/dashes within a character: 1 unit (silence)
Between characters within a word: 3 units (silence)
Between words: 7 units (silence)
Example
The word "HI" in Morse code:
H = .... (4 dots)
I = .. (2 dots)
Written: .... ..
Between H and I there is a 3-unit gap (character gap). The dots within each letter have 1-unit gaps between them.
Written Convention
When writing Morse code as text:
- Dots and dashes are written directly (no spaces within a character)
- A single space separates characters
- A forward slash (
/) or double space separates words
Use Case
Understanding Morse code basics is essential for anyone learning amateur radio, studying telecommunications history, or preparing for scout or military signaling certifications. The dot-dash-space structure forms the foundation for all Morse code communication.