My TV supports 3840x2160 resolution. When I watch NASA TV UHD on Hotbird, the picture information shows a resolution of 4K 3840x2160.

In the Vu+UNO 4k SE box setup menu for Video output, I can choose between Automatic resolution set to "All resolutions", "HD only" and disabled with mode set to 2160. I assume now that the only 4K resolution supported by the Vu+UNO 4k SE box is 2160p.

My TV supports 4K Ultra HD upscaling. Can someone please advise me which video output I should use on the Vu+UNO 4k SE to get the best picture from UHD transmissions.

By trial and error, the best result would seem to be with the output set to "HD only". I assume then that the TV's 4K Ultra HD upscaling is producing the good result. Some combinations in the video menu result in only a small image in the top right-hand corner of the TV screen.

I am now using an 8K spec HDMI cable between the` box and TV. This has made no difference.