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Standard intermediate frequency used for AM receiver is ________

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Standard intermediate frequency used for AM receiver is ________

(a) 455 MHz

(b) 455 KHz

(c) 455 Hz

(d) 20 KHz

I have been asked this question in unit test.

This interesting question is from AGC topic in division Receivers & Transducers of Analog Communications

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The correct choice is (b) 455 KHz

To elaborate: Standard intermediate frequency (IF) used for AM receiver is 455KHz. IF is obtained by mixing the incoming siganl frequency with the locally generated signal frequency in order to convert the incoming RF signal frequency to a low frequency which can be processed easily.

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