Advanced Qualification · A-006 Receivers · A-006-004-008
AGC voltage is applied to the:
- A AF and IF amplifiers
- B RF and AF amplifiers
- C detector and AF amplifiers
- D RF and IF amplifiers
Correct answer: D — RF and IF amplifiers. From the official ISED question bank, verified word for word.
Why
Automatic Gain Control, or AGC, acts like a volume knob that the radio adjusts itself to keep the sound steady. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.