Information about Morse Codewave
CW is a mode of transmission to the same extent as AM, FM, SSB, or other digital modes. The CW mode stands for Continuous Wave, which is the manipulation of a continuous AM carrier over the air waves to produce an intelligible audio signal* when mixed with a heterodyne signal from the BFO (Beat Frequency Oscillator) stage of a receiver.
The resulting code is similar to what is known as Morse code, which was the precursor of CW and strictly used over wires. The American and Continental codes were significantly different than that of CW.
CW uses the international code and is primarily used over the air waves. Though most commercial traffic has now ceased operation using that mode, ham radio operators are still very much using CW, primarily for two reasons: At equal power, it carries much further than a voice signal and the bandwidth of CW is much narrower than that of an SSB or AM signal. In fact, you could easily have more than 15 different CW transmissions, in comparison to only one SSB voice transmission.
The resulting code is similar to what is known as Morse code, which was the precursor of CW and strictly used over wires. The American and Continental codes were significantly different than that of CW.
CW uses the international code and is primarily used over the air waves. Though most commercial traffic has now ceased operation using that mode, ham radio operators are still very much using CW, primarily for two reasons: At equal power, it carries much further than a voice signal and the bandwidth of CW is much narrower than that of an SSB or AM signal. In fact, you could easily have more than 15 different CW transmissions, in comparison to only one SSB voice transmission.
Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the strength of the transmitted signal in relation to the information being sent.
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frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant).
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Morse code is a method for transmitting telegraphic information, using standardized sequences of short and long elements to represent the letters, numerals, punctuation and special characters of a message.
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Amateur radio, often called ham radio, is both a hobby and a service that uses various types of radio communications equipment to communicate with other radio amateurs for public service, recreation and self-training.
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