Hey everyone. I have only one TV connected to the satellite so that I can monitor who is watching what in my house. It is run on a separate cable coming in from the wall. I want to get OTA HD though for the other rooms. I was going to install an outdoor antenna. I have the old wiring from when I used to have cable but is not used anymore since the Satellite in on a new, dedicated line. If I plug the outdoor antenna directly into one of my caoxial outlets in the wall, will that allow any other tv to receive the signal? will i need amplifiers?