Basic Qualification · B-004 Circuit components · B-004-001-003
To increase the level of very weak radio signals from an antenna, you would use:
- Aan audio oscillator
- Ban audio amplifier
- Can RF amplifier
- Dan RF oscillator
Correct answer: C — an RF amplifier. From the official ISED question bank, verified word for word.
Why
An RF amplifier boosts weak radio frequency signals right after they arrive from the antenna, making them strong enough for the rest of the radio to process. The full explanation — and one for every question — is in Pro.
Practise this section
Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.
Drill B-004 — free, no account