a 3 ghz signal is transmitted from an antenna with a gain of 100 (20 db) to a receive antenna with a gain of 2 (3 db) that is 50 meters away. the transmitter power is 10 w. find the power received by the receiving antenna in watts and in dbm. 2. define the term ""directivity"" and use it in a sentence . 3. define ""gain"" for an antenna and explain how it differs from directivity. 4. what is ""multi-path"" interference and does it always degrade the signal power?