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Amateur Extra Class (Element 4) • 2024-2028

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Question E4C04

From subelement E4 - E4C

E4C04
Answer: D

What is the noise figure of a receiver?

AThe ratio of atmospheric noise to phase noise
BThe ratio of the noise bandwidth in hertz to the theoretical bandwidth of a resistive network
CThe ratio in dB of the noise generated in the receiver to atmospheric noise
DThe ratio in dB of the noise generated by the receiver to the theoretical minimum noise