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Which of the following is not present in the conversion stages of super heterodyne receiver?

Which of the following is not present in the conversion stages of super heterodyne receiver? Correct Answer Step attenuator

Each conversion stage of super heterodyne receiver has one LO, additional filters and amplifiers. Step attenuator is present after the pre-selector filters. It confines the total power at the input of first conversion stage within its linear range.

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