Yes, it will pick up HD OTA
QAM (quadrature amplitude modulation) is capability to tune from those digital cable feeding
A QAM tuner is a electronic tuning device. The qam tuner is used in digital television sets and other electronic equipment, such as vcrs and dvrs. QAM stands for "quadrature amplitude modulation". Qam is the format by which digital cable channels are encoded and transmitted by the cable companies. A qam tuner can tune non-encrypted, digital cable channels, without using a cable box (set top box). If your set has a built in qam tuner, you can simply plug the cable from the cable company, directly into your TV set. This will allow you to watch non-encrypted programming. (Encryption is used for programs such as HBO and Showtime).