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A 1 KW signal is transmitted using a c...

A ` 1 KW ` signal is transmitted using a communication channel which provides attenuatiom at the rate of ` - 2 dB per km` . If the communication channel has a total length of ` 5 km` , the power of the signal received is
[ gain in `dB = 10 log ((P_(0))/(P_(i)))]`

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