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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 by Samuel Morse and Alfred Vail, its international alphabet and variations, and its applications and history.

3. Russian Morse code - Wikipedia

   en.wikipedia.org/wiki/Russian_Morse_code

   Learn about the history, classification and correspondences of the Russian Morse code, a non-Latin Morse code for Russian Cyrillic. See the table and melodies of the Russian characters and their Latin equivalents.

4. 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.

5. 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.

6. List of amateur radio software - Wikipedia

   en.wikipedia.org/wiki/List_of_amateur_radio_software

   Find various software tools and logging software for amateur radio, such as CW Skimmer, EchoLink, Fldigi, WSJT, HamSphere, and more. Compare features, licenses, operating systems, and categories of different programs.

7. Beat frequency oscillator - Wikipedia

   en.wikipedia.org/wiki/Beat_frequency_oscillator

   A beat frequency oscillator (BFO) is a device that creates an audio signal from Morse code or single-sideband radio signals. Learn how BFOs work, their history, and examples of different types of BFOs.

8. CW Skimmer - Wikipedia

   en.wikipedia.org/wiki/CW_Skimmer

   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.

9. Morse code mnemonics - Wikipedia

   en.wikipedia.org/wiki/Morse_code_mnemonics

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