I had an HR54 and C61 installed yesterday. They also replace my LNB, but I don't think it's a reverse band item. I was using my Samsung TV as an RVU tv, but it was so terribly slow, that I went with the C61. I have watched part of a documentary which I had previously watched using the RVU tv, and the picture from the C61 is not as good. It appears to flicker and posters on here have said that is because the video is 24 fps, not 60 fps like the RVU hookup provides.
With the RVU I could get test channel 9801, but not 9800. Now I can get 9800, but not 9801. It's much better having 4k on my HR54 because with the RVU TV, I had to switch sources on my TV.
By the way, the new receivers and installation were free. I renewed my contract and got some good $ incentives too. There were two techs, both of whom were very knowledgeable and they answered all of my questions and explained everything
they were doing. The retention CSR at DirecTV whom I spoke to was very agreeable and she knew her stuff. It was my best call to DirecTV ever!