WWEll it may be a different system in Canada. But here's how it works with us.

In fcat we've got a communal system here in Harlow, with a plug in the wall downstairs bringing in the signal - but it might just as well be coming from an external aerial.

All you need to do is to have a splitter. The aerial cable plugs into it, and two cables conme out of it, one for each TV.

But since splitting the signal weakens it, you might do better to get the sort of splitter which also boosts the signal(it's plugged into an electric socket to get the power to do that). If you wanted you could get a booster to split the signal several ways, so that you could be running lots of TVs all over the place.

The two TVs could be watching completely different channels that way.

If you've a video-recorder you could fix it so that the other TV could also play a video which was playing on your machine, even if the main TV was playing a live programme. That would mean plugging the aerial cable into the video, and running the cable from the video to the splitter, and thence to the two TVs, and tuning the TVs so that they had one channel tuned to the video signal.

But that's a bit fussy - I'd advise to just run the signal from the wall to the signal booster, plugged into an electric socket, with a cable out to each of the TVs.