Originally Posted by jimh
the diplexer is how dish does it when they want to run a tv ant with the sat receiver output. i'm wondering how the tv stations were able to simulcast the digital and analogue signals on the same channels before they killed the analogue signal. unless the digital signal wasn't really on the same freq...
Yes, the digital signal was broadcast on a different channel and they used virtual channel renumbering to make you think it was on the same channel. (That's a feature of digital TVs that wasn't there before.)