Analog television is no longer on the air in most countries, but Extended Data Services (XDS), time signals, closed captioning, teletext, and even web pages may be lurking on old videotape recordings of it, if you have equipment capable of decoding them.

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Time flow:
0:00 Introduction
1:34 XDS
5:32 Auto clock set
10:24 V-Chip
12:42 How it works
16:10 Teletext & closed captioning
17:05 Intercast & the HubCap

#RetroTech #VHS #ClassicTelevision