A microwave transmitter has an output of 10 W and operates at a wavelength of 12 cm. Suppose that this transmitter is used in a radio communications system, in which the transmitting and receiving antennas are parabolas.

Tx antenna (60 db directive and 80% efficiency)

Rx Antenna (Directivity of 1000 and efficiency of 90%)

A) Determine the effective isotropic power radiated by the transmitting antenna (dbw).

(Note: 2 db of losses on the line on the transmitter side) (Value: 2 pts).

B) If the receiving antenna is located 50 km from the transmitting antenna in the free space, determine the received power (dbm) in the receiver. (Note: 2 db of losses on the receiver-side line) (Value:

2 pts).

C) Diameter of the transmitter satellite dish in meters. (Value: 2 pts).