Template:Morse code From Wikipedia the free encyclopedia vteInternational Morse codeTransmission methods Electrical telegraph On–off keying Continuous wave Modulated continuous wave Heliograph Signal lamp Notable signals SOS CQD Morse code mnemonics Prosigns for Morse code Morse code abbreviations Q code Z code Other writing systemsin Morse code American Morse code Greek alphabet Cyrillic script Russian Hebrew script Arabic script Wabun code Chinese telegraph code Korean code