But it passes through the atmosphere to the outside world. So far in tv wave will require stations to broadcast tv waves, the waves from time to time to get from the train station in a straight line and extend to the signal strength before it is sent to the next station, because the signal travels in a straight line, so the signal is going to be just about 80 km far, on the surface of the Earth, or may use a wave microwave signal from the satellite, which sends it to the orbit in orbit at the position of a stop versus position on the surface of the world.
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