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  2. Morse code - Wikipedia

    en.wikipedia.org/wiki/Morse_code

    Morse code is a system of encoding text characters as dots and dashes for telecommunication. Learn about its development, alphabet, speed, and how it is transmitted by sound, light or electricity.

  3. Morse code abbreviations - Wikipedia

    en.wikipedia.org/wiki/Morse_code_abbreviations

    Learn how to use Morse code abbreviations to speed up Morse communications by foreshortening textual words and phrases. See the table of selected abbreviations and their meanings, and the difference between abbreviations and prosigns.

  4. Wireless telegraphy - Wikipedia

    en.wikipedia.org/wiki/Wireless_telegraphy

    Learn about the history, principles, and applications of wireless telegraphy or radiotelegraphy, the transmission of text messages by radio waves. Find out how Morse code, CW, FSK, and RTTY were used in commercial, military, and amateur radio communication.

  5. Signal lamp - Wikipedia

    en.wikipedia.org/wiki/Signal_lamp

    A signal lamp is a device for optical communication by flashes of light, often using Morse code. Learn about the origin and evolution of signal lamps, especially the Aldis lamp invented by Arthur Cyril Webb Aldis in 1944.

  6. Morse code mnemonics - Wikipedia

    en.wikipedia.org/wiki/Morse_code_mnemonics

    Learn how to remember Morse code characters using visual, syllabic, or word mnemonics. See examples of mnemonics for letters, numbers, punctuation, and other symbols.

  7. Prosigns for Morse code - Wikipedia

    en.wikipedia.org/wiki/Prosigns_for_Morse_code

    Prosigns are shorthand signals used in Morse code telegraphy to simplify and standardize procedural protocols. Learn about their history, notation, representations, and international variations.

  8. Telegraph code - Wikipedia

    en.wikipedia.org/wiki/Telegraph_code

    A telegraph code is a character encoding used to transmit information by telegraphy. Learn about different types of telegraph codes, such as Morse code, Baudot code, Chappe code, and Edelcrantz code.

  9. Friedrich Clemens Gerke - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Clemens_Gerke

    Friedrich Clemens Gerke was a German writer, journalist, musician and pioneer of telegraphy who revised the Morse code in 1848. He simplified the code by using only dits and dahs, and standardized it as the International Morse code.