Advanced Qualification · A-006 Receivers · A-006-001-001
What are the advantages of the frequency conversion process in a superheterodyne receiver?
- A Automatic soft-limiting and automatic squelching
- B Automatic squelching and increased sensitivity
- C Increased selectivity and optimal tuned circuit design
- D Automatic detection in the RF amplifier and increased sensitivity
Correct answer: C — Increased selectivity and optimal tuned circuit design. From the official ISED question bank, verified word for word.
Why
The superheterodyne receiver converts incoming signals to a fixed intermediate frequency, allowing engineers to build highly selective filters that are much easier to design and tune than variable ones. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.