They don't need to be pointed at each other. The antennas aren't very high gain which means they will still hit around the target. But yes it is difficult. Gai

They don't need to be pointed at each other. The antennas aren't very high gain which means they will still hit around the target. But yes it is difficult. Gain, even though this isn't a correct analogy, is like the difference between a laser and a flash light. The laser is a very narrow beam, which is a high gain antenna, and the flash light is very low gain. What I'd be worried about are waves and storms knocking out the network. I would assume that microwaves would go through a wave since they are so nigh energy but they are used by the navy for wave-detection (radar is basically microwave). Moving around isn't too bad because they only need to be on at about 50-60deg. Heavy waves would knock out the network like you are worried as well since I think microwaves would be able to punch through the ionosphere most of the time (UHF is usually used for sat-coms by the military).