MotoSat and Direct TV. What now????

It comes from the receiver. The receiver can send data about information it receives to a remote device. It's an old, outdated, unsupported technology but it's still there and still works. In this case, the antenna would use the information coming from the receivers signal strength meter to determine proper satellite and signal strength. This part of a receiver cannot be turned off so even if programming is not being sent, the signal will always be coming down and a receiver (activated or not) will always be able to see it. Unless DirecTV has come up with some magically signal that they can send via satellite to actually kill a receiver (and why would they when all they have to do is no longer provide programming to the card associated with that receiver) then the box will continue to see a signal and send that data out via low speed data port.