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E4C05
What does a receiver noise floor of -174 dBm represent?
Pick an answer to check it.
Answer: B. The theoretical noise in a 1 Hz bandwidth at the input of a perfect receiver at room temperature
-174 dBm is the theoretical thermal noise in a 1 Hz bandwidth at room temperature for a perfect receiver. Real receivers are always somewhat noisier than this.
Tip: -174 dBm/Hz = perfect receiver floor.