Basic Qualification · B-003 Station assembly, practice and safety · B-003-006-003
In a typical single-sideband transmitter, what is the purpose of the filter that follows the balanced modulator?
- A Suppress the RF carrier signal
- B Shape the audio waveform
- C Remove harmonics from the transmitted signal
- D Remove the unwanted sideband
Correct answer: D — Remove the unwanted sideband. From the official ISED question bank, verified word for word.
Why
A balanced modulator creates both an upper and a lower sideband along with the carrier, but single-sideband transmission requires only one of those sidebands to save space and power. 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.