Question: Were you trying to receive Over the Air TV? If so then you need to take digital TV 101 course (Read a few hundered threads on the issue going back to 2007 here in the forum.. Or if you want I and others can give you info here..
Antenna: Winegard batwing is good, add wingman it better, Add Sensro Pro it best.
You need to POINT THE BEAST at teh transmitter (not always possible with older wings).
Beyond that I won't type..
In your new TV.. All televisions for sale now should be ATSC ready, they are wind (16x9) screen instead of the old 4x3, and are capable of direct reception of over the air TV. That's about all you need to know other than what fits.
I would make sure the TV you buy has a signal strength feature to assist you in pointing the antenna (not all do).
Second. I would upgrade the antenna, As I said
To upgrade the standard Winegard Batwing (DO confirm it is a Winegard on the roof) you simple go up with the new "Wingman" and optionally a pair of regular pliars Pull 4 rubber feet off the existing antenna, Hold the add-on in place and push some plastic push pins into the holes. Job done.
The Sensar Pro... If you have teh wall plate with the 12 volt outlet, Switch LED and antenna fitting.. it is a replacement for this.. And that is basically all you do. You will need a screwdriver for this one. Pliars and a 7/16" wrency may help too.
If you have a box of many buttons (Video selection switch box) it's a bit more complex.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times