Is it possible to improve on the alignment data shown on the attachment. Since the beamwidth is 0.88 degrees it would seem very difficult to achieve perfect alignment. Also are there any pointers to calculating the real free space loss? Must also include the Oxygen attenuation (16dB/km) and the attenuation affect of rain (worst case scenario), for 5 mm/h = 5 dB/km.
Any feedback or tips would be welcomed.