Basic Qualification · B-003 Station assembly, practice and safety · B-003-003-010
In an FM receiver, which stage includes a squelch circuit?
- A Limiter
- B IF amplifier
- C Product detector
- D AF amplifier
Correct answer: D — AF amplifier. From the official ISED question bank, verified word for word.
Why
The squelch circuit sits in the AF amplifier stage because this is where the audio signal is boosted to drive your speaker. The full explanation — and one for every question — is in Pro.
Practise this section
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.