Two antennas at the same location on earth receive a signal from a satellite directly overhead at altitude h = 36.0 km. Both antennas have been optimized for this purpose and both are observed to receive the signal with equal strength. One antenna has directivity D1 = 11 dB and the other has aperture A2 = 3.6 λ2, where λ is the operating wavelength. How much more (or perhaps less) efficient is antenna #1 than antenna #2? Give the ratio of the efficiencies.