(a(i))[1]
State what attenuation means.
(a(ii))[2]
State what noise means.
(b)[2]
Explain why regenerator amplifiers do not amplify the noise that has been picked up on digital signals.
(c)[3]
A transmitter on Earth generates a signal with power $2.4\,\text{kW}$. When this signal is received by a satellite, the attenuation is $195\,\text{dB}$. Calculate the signal power received by the satellite.