Basic Qualification · B-003 Station assembly, practice and safety · B-003-002-005
In an FM transmitter, the frequency multiplier:
- A produces a low distortion audio response
- B produces the FM output carrier frequency
- C allows the oscillator to be run at very high frequencies
- D is the major load fed by the power supply
Correct answer: B — produces the FM output carrier frequency. From the official ISED question bank, verified word for word.
Why
A frequency multiplier takes the signal from a stable, lower-frequency oscillator and increases its frequency to reach the final channel you need to transmit on, effectively creating the FM output carrier frequency. The full explanation — and one for every question — is in Pro.
Practise this section
Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.