Advanced Qualification · A-006 Receivers · A-006-004-005
The amplified IF signal is applied to the ____________ stage in a superheterodyne receiver:
- A LO
- B detector
- C RF amplifier
- D audio output
Correct answer: B — detector. From the official ISED question bank, verified word for word.
Why
In a superheterodyne receiver, the amplified intermediate frequency signal must be converted back into an audio or data signal, which is the specific job of the detector stage. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.