Learn Morse Code
Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment. It is named after Samuel Morse, the inventor of the telegraph.
The Basics: Dots and Dashes
Each character (letter, number, or punctuation) is represented by a unique sequence of dots and dashes.
- The dot (·), also called a "dit", is the basic unit of time.
- The dash (—), or "dah", is three times as long as a dot.
The Rules of Timing
The timing of the spaces between the sounds is just as important as the dots and dashes themselves. This is often called the "1-3-7" rule, based on the length of a dot.
- The space between parts of the same letter (e.g., between the dot and dash in 'A') is one dot duration.
- The space between letters in a word is three dot durations.
- The space between words is seven dot durations.
Famous Signal: SOS
The sequence SOS (... --- ...) is internationally recognized as a Morse code distress signal. It consists of three dits, followed by three dahs, and three more dits. While often associated with phrases like "Save Our Souls" or "Save Our Ship," these are backronyms. The sequence was chosen simply because it's a clear, continuous, and unmistakable pattern that is unlikely to be confused with other transmissions. This makes it ideal for emergency use.
Other Notable Morse Phrases & Conventions
73 (Best regards)
In amateur radio, "73" is a common way to say "Best regards." Its Morse code is --... ...--.
88 (Love and kisses)
Similarly, "88" is used in amateur radio to mean "Love and kisses." Its Morse code is ---.. ---...
K (Over / Invite to transmit)
The single letter "K" sent in Morse code ( -.- ) is a procedural signal meaning "over," inviting the other party to transmit. It's less formal than "go ahead".
"What hath God wrought!"
This phrase was the first official message sent by Samuel Morse on May 24, 1844, to formally open the Baltimore–Washington telegraph line. It marked a pivotal moment in communication history.
MORSE CODE REFERENCE
Click any character below to see and hear it in the Morse Player.
Morse Player
Learning Resources
Here are some excellent resources to help you learn and practice Morse code:
- Morse Code Ninja - Modern, gamified Morse code learning with spaced repetition and video lessons.
- LearnMorseCode.com - Interactive trainer with real-time feedback and progress tracking.
- Morse Code World - An interactive tool for learning and translating Morse code.
- Wikipedia: Morse Code - For a deep dive into the history and variations of Morse code.
- Learn CW Online (LCWO) - A very popular and effective site for learning Morse code with the Koch method.
- ARRL Learning Center - Resources from the national association for amateur radio in the US.