Rocky Channel. Nothing but Rocky. Unless you tune over to Rocky 2.
One suggestion... I won't say a date but equipment existed, probably not legal to use but I may have, er, seen it, which would transmit a signal between your home video equipment for a short distance. The legal issue is that the distance might be outside the owner's actual home. So one theory is that your neighbour was watching Rocky on something like that. But presumably it didn't look like a VHS picture, which is lesser quality than most broadcasts. I suppose laser disc would be better, or was it?