Advanced Qualification · A-006 Receivers · A-006-003-002
Which of the following is a purpose of the first IF amplifier stage in a receiver?
- ATo increase dynamic response
- BTo improve noise figure performance
- CTo improve selectivity and gain
- DTo tune out cross-modulation distortion
Correct answer: C — To improve selectivity and gain. From the official ISED question bank, verified word for word.
Why
The first intermediate frequency, or IF, amplifier is designed to boost the signal strength and sharpen the receiver's ability to separate the desired station from nearby frequencies. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers is section A-006 of the Advanced exam: Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.
Drill A-006 — free, no account