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In a satellite ground station the received signal is directly amplified...

This question belongs to Electronics And Communications Engineering Satellite Communication
Satellite Communication
?

In a satellite ground station, the received signal is directly amplified in a low noise parametric amplifier followed by a FET amplifier. The gains and effective noise temperatures of the amplifiers are 20 dB, 9.0 K and 10 dB, 200 K respectively. The effective noise temperature of the combination is

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Correct Answer: Option A
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