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Learn about the origin, development and features of Morse code, a method of encoding text characters as dots and dashes for telecommunication. Find out how Morse code is used in different languages, media and applications, and how it is transmitted and received.
The one-time pad is an encryption technique that uses a single-use pre-shared key that is larger than or equal to the message size. It is impossible to break if the key is random, secret, and used only once. Learn about its history, applications, and quantum version.
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.
A telegraph key or Morse key is a device used to transmit text messages in Morse code. Learn about the different types of keys, such as straight, sideswiper, semi-automatic, and electronic, and their origins and features.
CW Skimmer is a Windows program that decodes and analyzes Morse code signals in the receiver passband. It uses Bayesian statistics, noise blanker, AGC, and CW filter, and supports network connections and DX cluster interface.
Wireless telegraphy or radiotelegraphy is transmission of text messages by radio waves, analogous to electrical telegraphy using cables. Learn about its invention, development, methods, regulation, and current use in amateur radio and military communication.
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.
Learn about the early electrical telegraph system invented by Cooke and Wheatstone in the 1830s. Find out how it worked, who used it, and how it evolved over time.