Those of us who were around at the dawn, or at least the mid-morning, of UHF television already know this: What is the actual purpose of using directional yagi antenna?
Someone who knows explained:
Directional antennas have “gain” along their main lobe. You’ll get a stronger signal in the desired direction, and better signal rejection, off-axis.
The questioner was evidently disappointed:
so it doesn’t provide any free internet
[insert Picardian facepalm here]