Samsung RU7100 and Contour GX-CX801CK HDMI Compatibility Issues

I just bought a Samsung RU7100. My set top box is a Contour Model GX-CX801CK. I connect to the RU7100 from the Contour with a HDMI cable (port 1) and a Coax cable (antenna). The picture looks fuzzy.. If I disconnect the Coax cable to the RU7100 antenna input, I have no cable tv. The RU7100 asks for a make and model of the device on HDMI (port 1). Any ideas on the actual manufacture and model of the set top box? Has anyone else had this issue that has a fix?