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In higher power AM transmission, modulation is done at _________

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In higher power AM transmission, modulation is done at _________

(a) Source stage

(b) Transducer Stage

(c) Oscillator stage

(d) RF power stage

The question was posed to me at a job interview.

This interesting question is from Comparision of SSB Suppression Techniques topic in chapter SSB Modulation of Analog Communications

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Right option is (d) RF power stage

The best I can explain: RF power amplifier converts a low power radio frequency signal to high power. Modulation is done at RF power stage for high power AM transmission.

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