Advanced Qualification · A-006 Receivers · A-006-001-011
The advantage of a double conversion receiver over a single conversion receiver is that it:
- A is a more sensitive receiver
- B produces a louder audio signal
- C suffers less from image interference given front end sensitivity
- D does not drift off frequency
Correct answer: C — suffers less from image interference given front end sensitivity. From the official ISED question bank, verified word for word.
Why
A double conversion receiver uses two frequency changes instead of one, which makes it much harder for unwanted signals called image frequencies to slip through and cause interference. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.