6. It is often more convenient to express distance in miles and frequency in MH. Rewrite Equation for free space loss in dB using these dimensions. 7. Assume that two antennas are half-wave dipoles and each has a directive gain of 3dB. If the transmitted power is 100mW and the two antennas are separated by a distance of 20km, calculate the a) Effective radiated power in dBm | b) Received power in dBm ? Assume that the antennas are aligned so that the directive gain numbers are correct and that the frequency used is 100MHz