Basic Qualification · B-003 Station assembly, practice and safety · B-003-010-002
The figure in a receiver's specifications which indicates its sensitivity is the:
- A bandwidth of the IF in kilohertz
- B number of RF amplifiers
- C RF input signal needed to achieve a given signal-to-noise ratio
- D audio output in watts
Correct answer: C — RF input signal needed to achieve a given signal-to-noise ratio. From the official ISED question bank, verified word for word.
Why
Sensitivity measures how well a receiver can hear very weak signals, which is defined by the smallest radio frequency input signal needed to produce a clear output with a specific signal-to-noise ratio. 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.