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Mostly used radio receivers are?

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in Analog Communications by (122k points)
Mostly used radio receivers are?

(a) pulsed receivers

(b) CW receivers

(c) TRF receivers

(d) super heterodyne receivers

I have been asked this question during an online interview.

My query is from Spectrum of Multitone Signal in chapter Amplitude Modulation of Analog Communications

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Correct choice is (d) super heterodyne receivers

The best explanation: Superheterodyne Receivers are radio receivers that use frequency mixing to convert a received high frequency signal to a fixed lower intermediate frequency which can be processed more conveniently. It is also the most used receivers. It is used in a variety of applications from broadcast receivers to two-way radio communication links as well as many mobile radio communications systems.

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