Basic Qualification · B-002 Operating and procedures · B-002-009-011
What is the usefulness of stations CHU, WWV and WWVH to amateur radio operators?
- A Provide accurate and precise frequency and time signals
- B Provide received signal reports of your transmissions
- C Provide forecasts of band conditions
- D Provide amateur radio bulletins
Correct answer: A — Provide accurate and precise frequency and time signals. From the official ISED question bank, verified word for word.
Why
Stations like CHU in Canada and WWV or WWVH in the United States broadcast constant radio tones that tell you the exact time and frequency, allowing you to calibrate your own equipment for precise operation. The full explanation — and one for every question — is in Pro.
Practise this section
How to operate: calling, phonetics, Q-signals, repeaters, nets, emergency traffic, and the courtesies that keep a band usable.