At this price point you you might as well buy the 65 inch, I have the 55 I bought less than 1 month ago for the same price.
Show your cable provider the attached image. I feel it is either QAM via HDMI only, or not all.
Happy hunting.
Sony - 65" Class - LED - X850E Series - 2160p - Smart - 4K UHD TV with HDR
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