# F.M., A.M. and S.S.B. transmitters

### Explanation of question 18

A sideband generator is a circuit containing the

1. mixer, bandpass filter, RF amplifier and power amplifier
2. balanced modulator, RF amplifier, mixer and VFO
3. speech amplifier, balanced modulator, buffer amplifier and power amplifier
4. speech amplifier, balanced modulator, carrier oscillator and filter

The answer is :- 4 ‘Sideband generator’ is a phrase to describe the essential components to produce a single sideband, i.e. speech amplifier, balanced modulator, carrier oscillator and filter.

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