Question
What is CW?
Answer Options
- A) A type of electromagnetic propagation
- B) A digital mode used primarily on 2 meter FM
- C) A technique for coil winding
- D) Another name for a Morse code transmission
Correct Answer: D
Explanation
CW stands for Continuous Wave. In the context of amateur radio, CW is another name for a Morse code transmission. This mode is created when a steady carrier wave (the ‘continuous wave’) is simply keyed on and off to form the dots and dashes of the Morse code alphabet.
CW is the oldest mode of radio communication and remains popular today due to its simplicity, its narrow bandwidth (T8A11), and its ability to communicate over long distances even when signals are extremely weak (QRP).
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