technology. It was a mini-miracle when I set up YTTV.

I just checked my YTTV guide. There are three channels just below NBCSN that have a padlock. They also have a '4K" icon. When I select one of those channels as if to watch it I see a popup menu telling me I need to pay for an upgrade to "4K Plus".

I don't know how this is going to shake out considering that I used the new feature (not in the guide but on another screen) to select certain events to record, and there was no message about 4K.

FYI, I use my TV's built-in Roku to watch YTTV, if that matters.