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A signal is transmitted through multiple links suffering attenuation and amplification as shown below. If the signal power at point1 is 20 Watts, then

A signal is transmitted through multiple links suffering attenuation and amplification as shown below. If the signal power at point1 is 20 Watts, then the signal power at point4 is: Watts. -3 dB 1 dB 7 dB -3 dB Amplifier Point 1 Transmission medium Point 2 Point 3 Transmission medium Point 4 15.89 21 19 25.18

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