Besides, it comes with retrofit upgrades that allow upgrade batwing to digital HD.
I just don't understand how, after all this time, folks still believe there is such a thing as an antenna upgrade to digital HD. Every single antenna on the market (including a coat hanger stuck to the coax input on your TV) will receive digital HD. It's not the antenna, it's the broadcast. There are antennas that do a better job of receiving UHF channels where many TV signals now reside, but it's the broadcast that is digital HD and not the antenna that creates it.
The Winegard Batwing is now, and always has been fully "digital HD" capable. The Wingman add-on increases the UHF reception capability. This combination exceeds anything else out there for the RV market.