User:Vickas54/sandbox

50 dB quieting level in radio tuners is a performance metric which is used to compare the sensitivity of tuners. It is often measured in dBf (decibels relative to 1 femtowatt) or in microvolts (µV).

Definition
Using a 1 kHz signal at 100% standard modulation, the 50 dB quieting level is the received power of the carrier which results in a 50 dB drop in the tuner's output when the 1 kHz modulation is silenced.