I have a house where it is almost impossible to run interior wiring to the second floor, for various reasons. I am not allowed to do any drilling or cutting of walls.
I found the best (and very cheap) solution was:
1) run the 75ohm "TV out" signal over to the window
2) convert it to 300 ohm flat wire,
3) run that between window & frame to outdoors
4) tack it to siding & run it up one floor
5) pass it into 2nd floor window & convert back to 75 ohm
I am lucky I don't have metal siding, the 300 ohm wire shows almost no loss over a 15 foot length. That was a very pleasant surprise. The ViP211k must put out a good strong signal, because the picture upstairs if very good. 300ohm twin-lead is almost considered obsolete nowdays, but it did the job for me.