Basic Qualification · B-003 Station assembly, practice and safety · B-003-006-005
In a single-sideband transmitter, what is the purpose of the speech amplifier?
- A Amplify one of the signal's two sidebands
- B Amplify the signal's carrier
- C Amplify the signal's harmonic content
- D Amplify the audio you wish to transmit
Correct answer: D — Amplify the audio you wish to transmit. From the official ISED question bank, verified word for word.
Why
The speech amplifier boosts the weak electrical signal from your microphone before it reaches the rest of the transmitter, ensuring your voice is strong enough to be processed clearly. 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.