I installed one right when they came out.
They advertise you will double your channels.
Before installing I received 6 over the air digital channels while parked in my driveway.
After installing (and without even raising the antenna) I was able to pull in 20.
After deleting the Spanish channels & was getting 15 so it worked better than advertised.
Just remember, itís not a fix all cure. I have set up in a half dozen places where no signal could be found at all.
Dave, Judy & Daisy May
2010 Sierra 356RL
2011 Silverado 2500 4WD, LT, Ext Cab, LB
Duramax 6.6L V8 Turbo Diesel
Allison 1000 6-Speed Automatic Transmission