🔍 Key Concepts

• Receiver sensitivity and what it means in practical testing • The difference between SINAD (Signal + Noise + Distortion) and quieting measurements • Typical industry standard threshold values (in dB) used to specify sensitivity for VHF/UHF FM receivers

💭 Think About

• Ask yourself: when manufacturers publish a receiver sensitivity spec (for example, in microvolts), what exact test condition in dB do they almost always quote it with? • Think about which is more precise for comparing receivers: a specific SINAD value or a certain amount of quieting in FM receivers. • Consider which dB level from the options is the most commonly used engineering standard for specifying usable audio quality across many receiver datasheets.

✅ Before You Answer

• Be clear on what SINAD stands for and why it’s used instead of just ‘quieting’. • Check which dB value is widely recognized as the standard reference point for sensitivity tests in technical manuals and equipment datasheets. • Verify that the chosen method is one that allows direct, repeatable comparison of different receivers’ performance.