I think the OP needs to make it clear whether it is the TV signal or the wifi that is bad. That way they can get the correct advice. At the moment according to the OP they are been given mostly the incorrect advice.
Unless you have never stayed on a site that has a TV distribution system you would know it is TV signals he is talking about.
Plus wi-fi is never run down cables around a site - too difficult, to expensive, and takes too long.