I just tried the ClearVue antenna by ProTech. As I feared, it is a total 'BS' item. It did nothing. Actually, some TV channels came in worse than with my very limited normal antenna. So far, all indoor antenna amplifiers I have tried are BS.

 

The internet sells many products and "drugs" that do not work. Total BS.
I think they thank you for your money (then they laugh at you).

 

and try to sell you something else.