WiFi has nothing to do with TV
And analog TV as we know it is supposed to go off the air in 2 more years anyway. So don't waste a lot of money on it.WiFi gets more range as you locate it higher, it works only on line-of-sight. WiFi antenna cable has high losses, so you'll need to place the antenna close to the router (or computer) and compromise your location so the extra gain from a high-gain antenna, isn't just lost in the extra cable running out to it.