Do you recall the name of the digital antenna you have?
Just go to Winegard.com, everything you need to know about digital antennas.
ebay look up description: HDTV 1080P Outdoor Amplified Antenna Digital HD TV 150 Mile 360 Rotor UHF/VHF/FM
(The first antenna that didn't work for me was a Clearstream antenna. Totally useless for me, as I didn't have a line of sight to the broadcaster antennas and it didn't capture any signal very well. I installed it at my brother-in-law's house and it worked for him as he has a line-of-sight to the broadcaster antenna arrays.)