In a line of sight link , the transmitted power = 1 watt at the frequency of 11 GHz and the transmitting antenna has gain of 1000 , the receiving antenna is 40 Km apart from the transmitting station, find the receiving antenna gain in order to secure a C/N of 30 dB given that the noise power level N=-125.6 dBW , you need to account for a 2 dB cable loss on the receiving side.