Amateur Extra › E4 Amateur Practices › E4C04
E4C04
What is the noise figure of a receiver?
Pick an answer to check it.
Answer: D. The ratio in dB of the noise generated by the receiver to the theoretical minimum noise
Noise figure is the ratio, in dB, of the noise a receiver actually produces to the theoretical minimum noise. Lower noise figure means a quieter, more sensitive receiver.
Tip: Noise figure: actual noise vs ideal minimum.