Technical reasons why DVR can't output 2nd HD?

[PostItNote]

Are there technical limitations as to why any of the DVRs and HD Receivers can't send an ATSC or QAM signal to the second TV over coax? Is it extremely difficult to re-modulate the signal coming down, or will it require full re-encoding? I hate how limiting it is that you have to have a receiver for each HDTV :(

[James Long]

Find a consumer priced ATSC encoder. When one is available you may see receivers and other electronics with ATSC outputs ... until then you won't.