Signals lab

Morse workbench

Encode and decode International Morse code, or listen to a short practice sequence generated on your device.

Text ↔ Morse

Text (letters, digits, and common punctuation; up to 100 characters)

Speed (PARIS words/minute)Tone (Hz)

Morse (spaces between letters; / between words)

One-character practice

Listen, then type the character you heard.

Audio starts only when you press Play. This is a local oscillator, not a radio transmission or microphone recording. Dot = 1 unit, dash = 3, letter spacing = 3, word spacing = 7; PARIS timing sets the speed.

ITU International Morse code ↗