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Glossary1 3 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Noise figure (NF) is a measure of degradation of the signal to noise ratio (S/N), caused by components in a radio frequency signal chain. It is a number by which the performance of a radio receiver or system can be specified. The noise figure is simply the noise factor expressed in decibels (dB).