(a(i))[1]
State the direction of the orbit around the Earth.
(a(ii))[1]
State where the satellite is positioned relative to the Earth’s surface.
(a(iii))[1]
State a typical frequency used for communication between the satellite and Earth.
(b(i))[3]
A signal sent from Earth to a satellite has an initial power of $3.0\,\text{kW}$. The signal power received by the satellite is reduced by $195\,\text{dB}$. Calculate the signal power received by the satellite.
(b(ii))[2]
Using your answer in (i), explain why different frequencies are employed for the up-link and the down-link in satellite communication.