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A look back at the contraptions they used to bring you "recorded" programs long before they invented tape, and the guy who first thought of the concept. (The fact he ran a Mexico border blaster station and sold goat glands as a health cure shouldn't be held against him!)
A Brief History of Delayed Programming
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On the topic of delaying programming, there's this video I found some time ago, about the Alberta Government Telephones (AGT) delay centre in Calgary for CTV, produced in 1983, when Harvey Kirck was still co-anchoring the CTV National News.