Advanced Qualification · A-006 Receivers · A-006-005-004
What is one way receiver desensitization can be reduced?
- A Decrease the receiver squelch gain
- B Increase the receiver bandwidth
- C Increase the transmitter audio gain
- D Use a cavity filter
Correct answer: D — Use a cavity filter. From the official ISED question bank, verified word for word.
Why
A cavity filter acts like a very selective gate that blocks strong, unwanted signals from entering the receiver while letting the desired frequency pass through, which stops those strong signals from overwhelming the sensitive front end. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.