@ozzy The Vivid cannot yet handle satellite dish GiHz frequencies. This presents a challenge which I believe can be addressed successfully. Vivid can boost signals in the video range whether they be composite or component video. There may be an issue with the Oppo unit as the Vivid internal cable is compliant to HDMI 2.1:
48GBs, 8K@120 Hz 144Hz eARC HDR10 4:4:4 HDCP 2.3.
The (3) units were accorded at a deep discount along with a small ship charge. So I do not understand the complaint. Also, we are not an Amazon type seller that can take returns at no charge.
So, it is my hope that you will retain the use of the coax unit with the outside antenna and employ the HDMI unit for the satellite connection.
We cannot guarantee that the Vivids will work in every system. But presently the track record of Vivid and customer satisfaction is very high.