Thanks people who responded. Here is what I think you are looking for:
http://www.tvfool.com/?option=com_wr...5747e4d3aac7e7
I do not know the model number of the Winegard antenna; think I threw out the box. The antenna is on the roof - is a Channel Master rotating system used here for years - and I would say about 30 feet up. I think I bought a preamplifier at Radio Shack and had a local guy install it, with a splitter in the cellar so that both my TV's would receive the digital signals.
Sorry this is so sketchy, but I am totally illiterate about antennas, TV's, digital signals, computers, etc...you get the picture. Basically this is all over my head (..no pun instended). Would appreciate any help you can give me. Thank you.