Reposts are fine after a year or so! (see https://news.ycombinator.com/newsfaq.html) and historical material is always welcome here. Links to past threads are just to satisfy extra-curious readers.
(Whether the current submission was a good repost or not is a separate question of course.)
Yeah - it kind of blew my mind when I picked up a cheap DVBS satellite receiver box recently, tuned my dish to a satellite that carried German services, and found plain old Teletext running beautifully well on HD TV channels, rendered pixel perfect on my TV via HDMI. Mind boggling!
Ah thanks for this clarification - I was wondering what the need was for the RF modulation and if it was necessary for just plain old TV use. Great project and thanks for bringing the possibility to my attention!