I'm thinking of trying out the Antiference Silversensor indoor antenna to receive HDTV OTA broadcasts. It's a made-in-England product. I looked around on some web sites and found a Zenith ZHDTV1 antenna that looks exactly the same as the Antiference Silversensor. Is it the exact same antenna marketed through Zenith for U.S. consumption? Or is the Zenith only a look alike copy?