(a(i))[1]
State one application, for each case, in which information is transmitted using microwaves.
(a(ii))[1]
State one application, for each case, where information is transported using coaxial cables.
(a(iii))[1]
State one application, for each case, where information is carried by wire pairs.
(b(i))[2]
A station on Earth sends a signal with initial power $3.1\,\text{kW}$ to a geostationary satellite. The signal received by the satellite has attenuation of $190\,\text{dB}$. Calculate the power of the signal received by the satellite.
(b(ii))[3]
State and explain the changes made to the signal before it is transmitted back to Earth, using your answer in (i).