High Gain Tv Antenna Have A Sony Digital Lcd Bravia HD Tv. Local Channel Broadcast A Digital Test. Didn't Pass. Using High Gain Ant?

Have a Sony digital lcd Bravia HD Tv. Local channel broadcast a digital test. Didn't pass. Using high gain ant? - high gain tv antenna

Analog TV includes wide. Superior roof of the high-gain antenna is UHF / VHF. ?