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There is space separating all the transmission points, and it takes time for the signals to travel, thus space interferes with time and the advantage of “single point transmission”, which exists at higher power levels, cannot be achieved.
Good reply, Carl.
An elaboration to it would be that the directional pattern produced by such multiple radiators is the same regardless of power, for the same relative r-f power and r-f phase at each radiator in a given array.
