said by IowaCowboy:
The fact that Aereo's "antennas" are not on the same site as the subscriber makes it retransmission.
If you go back in history to the origin of cable TV, it was an Antenna that was placed somewhere (such as on a hill) and used to feed TVs that could not receive the signal directly (since it is in a valley with the hill blocking the signal). Thus it fits your definition of Antenna in one place and TV in another. Why does the use of the Internet as opposed to a long cable change the situation?
