A receiver has a noise figure of 7 dB, gain of 40 dB, noise temperature is 290 K. then the noise power at the receiver is:

Question:A receiver has a noise figure of 7 dB, gain of 40 dB, noise temperature is 290 K. then the noise power at the receiver is:

1.47. 4 dBm

2. -47.4 dBm

3.23 dBm

4. -23 dBm


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