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  2. Morse code - Wikipedia

    en.wikipedia.org/wiki/Morse_code

    Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. [3] [4] Morse code is named after Samuel Morse, one of the early developers of the system adopted for electrical telegraphy . International Morse code encodes the 26 ...

  3. Slow-scan television - Wikipedia

    en.wikipedia.org/wiki/Slow-scan_television

    Slow-scan television ( SSTV) is a picture transmission method, used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color. A literal term for SSTV is narrowband television. Analog broadcast television requires at least 6 MHz wide channels, because it transmits 25 or 30 picture frames per ...

  4. Morse code mnemonics - Wikipedia

    en.wikipedia.org/wiki/Morse_code_mnemonics

    Morse code mnemonics are systems to represent the sound of Morse characters in a way intended to be easy to remember. Since every one of these mnemonics requires a two-step mental translation between sound and character, none of these systems are useful for using manual Morse at practical speeds. Amateur radio clubs can provide resources to ...

  5. Widget Watch: Morse Code Translator - Engadget

    www.engadget.com/2006-10-09-widget-watch-morse...

    The Morse Code Translator, which does exactly what you expect it to do. It converts plain text to Morse code and vice versa. Might come in handy if you're ever stranded on a Mac Mania Geek Cruise ...

  6. Chirp - Wikipedia

    en.wikipedia.org/wiki/Chirp

    The projective chirp is ideally suited to image processing, and forms the basis for the projective chirplet transform. Key chirp. A change in frequency of Morse code from the desired frequency, due to poor stability in the RF oscillator, is known as chirp, and in the R-S-T system is given an appended letter 'C'.

  7. Samsung's 'history of electronics' animated videos seem like ...

    www.engadget.com/samsung-history-of-electronics...

    Samsung wants to teach you about the history of electronics, as long as you can stay awake long enough to sit through the dull lessons. Through its Innovation Museum, the company is releasing five ...

  8. List of amateur radio modes - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_modes

    Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the ...

  9. Acoustic telegraphy - Wikipedia

    en.wikipedia.org/wiki/Acoustic_telegraphy

    Acoustic telegraphy (also known as harmonic telegraphy) was a name for various methods of multiplexing (transmitting more than one) telegraph messages simultaneously over a single telegraph wire by using different audio frequencies or channels for each message. A telegrapher used a conventional Morse key to tap out the message in Morse code.

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