4.) The receiver is 150 meters away from the transmitter. What are the receiving signal strengths in dBm when CAT-5e and CAT-6 cables are used? Assume that the signal frequency is 100MHz and the transmission power is 20dBm. Show your work please.

5.) The distance between transmitter and amplifier is 100 meters, and distance between amplifier and receiver is 200 meters. Cat-3 cable is used to connect transmitter and amplifier where Cat-6 is used to connect amplifier and receiver. Determine the minimum transmission power in dBm if the signal frequency is 10MHz, required receiving signal strength is -5dBm, and gain of amplifier is 10dB. Show your work please.