Hd with no coxal imput

I was wondering if they make a HDTV tuner i can buy without using one from like a cable company or like dish network or direct tv.

Can anyone help me out?

For free-to-air broadcast? Yes lots.
For subscription services, ask your service what is supported.

They have them both for the PC and set top. OTA is ATSC, cable is QAM, and satellite is QPSK, or for Dish Network it is 8PSK. OTA and cable are combined is most and Satellite is separate. Some satellite FTA boxes include OTA but never cable.