Advanced Qualification · A-006 Receivers · A-006-003-005
How is receiver sensitivity often expressed for UHF FM receivers?
- A Noise Figure in decibels
- B Overall gain in decibels
- C RF level for 12 dB SINAD
- D RF level for a given Bit Error Rate (BER)
Correct answer: C — RF level for 12 dB SINAD. From the official ISED question bank, verified word for word.
Why
Receiver sensitivity for UHF FM units is measured by finding the weakest radio signal that still produces clear audio, specifically when the signal-to-noise-and-distortion ratio reaches 12 dB. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.