Basic Qualification · B-003 Station assembly, practice and safety · B-003-018-001
How could you best keep unauthorized persons from using your station at home?
- APut fuses in the main power line
- BUse a key-operated on/off switch in the main power line
- CUse a carrier-operated relay in the main power line
- DPut a "Danger - High Voltage" sign in the station
Correct answer: B — Use a key-operated on/off switch in the main power line. From the official ISED question bank, verified word for word.
Why
A key-operated on/off switch in the main power line is the best method because it physically prevents anyone without the key from turning the equipment on, effectively locking out unauthorized users. The full explanation — and one for every question — is in Pro.
Practise this section
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account