Those TVs could display an HD signal, but didn’t actually have a digital tuner in them. Nowadays all TVs come with one, so [Craig] found his old converter box was just gathering dust.

Ultra low jitter and high fidelity design using new receiver & D/A converter chip. Converts coaxial or toslink digital PCM/ LPCM audio signals to analog L/ R RCA and 3.5mm Jack audio simultaneously.

ATSC 3.0 TV Tuner: HDTV Mate USB ... then you need an Android TV box to use our products. Watch ATSC 3.0 Programs at Anytime: Starts enjoying the free digital broadcast channels whenever ...

If, however, your TV uses an antenna and does not have a digital tuner, you will need to either purchase a converter box or subscribe to a pay TV service to continue using the same TV set.