I am in the hill country of Wimberley, Texas, currently have a twenty-plus year old outdoor UHF-VHF antenna, previously was receiving 6 to 7 San Antonio stations, and now I can't receive any signals. We have a Radio Shack amplifier on the antenna, and have now purchased two Tivax coverter boxes, as well as another Philips outdoor antenna that we attached to the old outdoor antenna. Still, nothing. Any suggestions would be greatly appreciated!!