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Connect a HDMI TV to a DTA PAC UDTA cable box

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How do you hook up a TV with a HDMI cable is you are using the DTA PAC UDTA cable box that Comcast sent out for additional room setup? 

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if the box comcast sent you does not have an hdmi output you need to use composite cables or component cables, if its a real dta box you can only use coax, those are meant for old tv's mostly with no digital tuners