Basic Qualification · B-003 Station assembly, practice and safety · B-003-014-003
What do you need to adjust before using a microphone for the first time with a transceiver?
- A Deviation control
- B Automatic gain control level
- C Microphone gain level
- D Noise blanker threshold
Correct answer: C — Microphone gain level. From the official ISED question bank, verified word for word.
Why
You must set the microphone gain level first because it controls how much your voice boosts the radio signal; if it is too low, others cannot hear you, and if it is too high, your speech becomes distorted and wastes 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.