How is receiver sensitivity often expressed for UHF FM receivers?

For FM receivers, particularly in the VHF and UHF bands, sensitivity is standardly measured using the SINAD metric. SINAD stands for Signal-to-Noise and Distortion ratio. It evaluates how much RF input signal is required to produce an audio output where the desired signal is 12 dB stronger than the combined noise and distortion. A 12 dB SINAD roughly corresponds to an audio signal that is easily readable with some light static in the background, making it a highly practical benchmark for voice communications. Other metrics like Bit Error Rate (BER) apply specifically to digital modes, not standard analog FM.