Morse Code (-- --- •-• ••• • -•-• --- -•• •)

Origin

Morse Code was invented by Samuel F. B. Morse (1791-1872), a painter and founder of the National Academy of Design. He conceived the basic idea of an electromagnetic telegraph in 1832, and produced the first working telegraph set in 1836. This made transmission possible over any distance. The first Morse Code message, "What hath God wrought?", was sent from Washington to Baltimore.

Today experienced operators copy received text without the need to write as they receive, and when transmitting, can easily converse at 20 to 30 words per minute. Morse Code will always remain a viable means of providing highly reliable communications during difficult communications conditions.

Morse Code can be transmitted using sound or light, as sometimes happens between ships at sea. It is used in emergencies to transmit distress signals when no other form of communication is available. The standard international distress signal is •••---••• (SOS)

Since December 2003, Morse Code has included the @ symbol: it is a combination of a and c: •--•-• and is the first change to the system since before World War II.

Sources: www.arrl.org/FandES/ead/learncw/ www.cjonline.com/stories/021704/pag_morsecode.shtml

Morse code letters, puntuation and numerals

Links

Wikipedia article on morse code
http://en.wikipedia.org/wiki/Morse_code

Morse Code and Phonetic Alphabets
http://www.scphillips.com/morse/

Morse codes (Russian, Greek, Hebrew, Arabic, Japanese & Korean, etc.)
http://homepages.cwi.nl/~dik/english/codes/morse.html

Morse Code Music
http://www.philtulga.com/morse.html

Superaldis - an aldis lamp and heliograph simulator
http://home.no.net/fenja256/superaldis/

Other communication/notation systems

Braille, Maritime Signal Flags, Moon, Morse code, Semaphore

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