(a)[3]
Calculate the power received by the satellite.
(b(i))[1]
Suggest a frequency for the return signal to Earth.
(b(ii))[1]
Give a reason for your response in (i).
Physics 9702 · AS & A Level · Characteristics of alternating currents
Characteristics of alternating currents — practice question
A communications satellite orbiting Earth, shown in Fig. 12.1, is sent a $14\,\text{GHz}$ signal from a ground station on Earth with power $18\,\text{kW}$. The signal power loss between the ground station and the satellite is $190\,\text{dB}$.