Teletype Model 19 - Part 1: A Teletype Arrives for Restoration
CuriousMarc2 HN recommenders · recommended in 2 months, 2019–2020
tutorial · intermediate · evergreen · 2019–2020 on HN
CuriousMarc inspects a newly arrived Teletype Model 19, an early military unit built around a Model 15 keyboard and printer, after an initial rough cleaning. It is the first part of a restoration series and touches on 5-bit Baudot code.
HN commenters point to this restoration series as a thorough explanation of how teletypes work at every level.
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3 comments from Hacker News
I was staggered by how much adjustment was required when watching CuriousMarc's excellent Model 19 restoration series, seems incredibly finicky. ▶ this video
CuriousMarc, a volunteer at the Computer History Museum, recently finished a video series restoring two Model 19 teletypes into working order. It's a long series but eventually explains how the devices work at all levels, and shows off some of the more niche features of the ttys. Well worth the watch. ▶ this video
He has this playlist on the same channel where they restore the Model 19, and they explain in detail how the decoder works: ▶ this video