Very carefully check the unit before mounting. Switch the amp on/off. You must see a dramatic change, otherwise the amp is either weak or dead.HDTVO poor quality controlPros:Small, flat design ,not obtrusive when on the roofCons:Poor quality control,...

Solid Buy at a Reasonable PriceFrustrated With a Weak Signal? Give This One a Try!Pros:Outstanding signal pickup, Good Price, Nice LookingCons:Very Focused Reception, Cannot Pick up Broadcasts From Widely Different Directions