What is the purpose of the keying device in a transmitter?

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Multiple Choice

What is the purpose of the keying device in a transmitter?

Explanation:
The keying device gates the RF carrier on and off in response to the input signal, producing the modulated waveform used to transmit the information (as in Morse code or digital keying). In other words, it controls the generation of the modulated signal by turning the carrier on and off according to the data. It isn’t responsible for time synchronization between stations, measuring signal amplitude, or regulating the power supply—those functions lie elsewhere in the system.

The keying device gates the RF carrier on and off in response to the input signal, producing the modulated waveform used to transmit the information (as in Morse code or digital keying). In other words, it controls the generation of the modulated signal by turning the carrier on and off according to the data. It isn’t responsible for time synchronization between stations, measuring signal amplitude, or regulating the power supply—those functions lie elsewhere in the system.

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