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2. 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.

3. Continuous wave - Wikipedia

   en.wikipedia.org/wiki/Continuous_wave

   A continuous wave is an electromagnetic wave of constant amplitude and frequency, typically a sine wave, that can be used for radio transmission or modulation. Learn about the origin, development and persistence of continuous wave radio telegraphy, also known as Morse code, and its use in radar and other fields.

4. 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.

5. 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.

6. Morse potential - Wikipedia

   en.wikipedia.org/wiki/Morse_potential

   The Morse potential is a model for the potential energy of a diatomic molecule, accounting for bond breaking and anharmonicity. It is not used in modern spectroscopy, but inspired the MLR potential, which is the most popular function for fitting spectroscopic data.

7. Modulated continuous wave - Wikipedia

   en.wikipedia.org/wiki/Modulated_continuous_wave

   MCW can be generated by any AM or FM radio transmitter with audio input from an audio oscillator or equivalent audio source. [1] [2] When an SSB transmitter is modulated by Morse code of only a single audio frequency, the resulting radio frequency emission is J2A or J2B and therefore is CW by definition, not MCW. [3]

8. Wireless telegraphy - Wikipedia

   en.wikipedia.org/wiki/Wireless_telegraphy

   Learn about the history, principles and methods of wireless telegraphy or radiotelegraphy, the first means of radio communication by Morse code. Find out how it was used for commercial, diplomatic and military purposes, and how it is still practiced by amateurs and military.

9. Single-sideband modulation - Wikipedia

   en.wikipedia.org/wiki/Single-sideband_modulation

   Single-sideband modulation (SSB) is a type of modulation that uses transmitter power and bandwidth more efficiently than amplitude modulation (AM). It eliminates one of the sidebands and the carrier from the transmitted signal, but requires increased device complexity and tuning at the receiver.