Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-004-001
What type of signal does a balanced modulator produce?
- A FM with balanced deviation
- B Full carrier
- C Single sideband, suppressed carrier
- D Double sideband, suppressed carrier
Correct answer: D — Double sideband, suppressed carrier. From the official ISED question bank, verified word for word.
Why
A balanced modulator combines an audio signal with a radio frequency carrier to create two mirror-image frequency ranges, called sidebands, while intentionally cancelling out the original carrier wave. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.