Does DISH run a channel to tune to, to verify 4K and 4k HDR delivery? Frankly, I can't find any 4K content at all on Dish channels and I have a H3 and joey 4k that I'm trying to verify is delivering 4k and 4k HDR. My netflix subscription is limited to 1080 until i fork over more $ to them, so that won't work. I should be able to use amazon prime to test 4k UHD from the hopper 3 at least, right? but why no Prime on the 4k Joey, or why no youtube on the same? Also their built in home media player app won't play 4k content from either device. Terrible on Dish's part to support content so inconsistently from its own platform! I've been in the process of rolling out 4K and 4K HDR in my house. I just upgraded cabling with certified high-speed HDMI (QR-coded) monoprice price cables for short runs and active fiber HDMI for longer runs. I can stress test the system out up to full 4K HDR, 60Hz, YUV 4:4:4 BT2020/18GBps, using a PC with the capabilities and all is well except for the dish gear, like the hopper 3 and the 4k joey.