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Aeronautical

Which of the following is an example of CW transmission?
a) Sensor data transmission
b) Morse code transmission
c) Audio signal transmission
d) TV wave transmission

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Answer is b


Code transmission such as morse code are usually called continuous-wave (CW) transmissions. This kind of transmission is also referred to as ON/OFF keying (OOK). Despite the fact that only the carrier is being transmitted, sidebands are generated by such ON/OFF signals.

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