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#teletype#teletypemodel19#baudotcode

Teletype Model 19 - Part 1: A Teletype Arrives for Restoration

CuriousMarc

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YouTube
  • Recommended by 2 people: 2 on Hacker News.
  • Presented by CuriousMarc, volunteer at the Computer History Museum

Beginner. No background in the topic needed.

32K views8 years ago2 recommendations

HardwareHistory and cultureRetro computingHistory of computing

CuriousMarc inspects and cleans a newly arrived military Teletype Model 19, explaining its 5-bit Baudot code communication system.

A Teletype recently arrived for restoration. It's an early one, a Model 19, which actually incorporates a Model 15 keyboard and printer unit first introduced in 1930. This Model 19 was a military version made for the Army Signal Corps, and was a mainstay in WWII. The gray paint on ours indicates it was likely deployed in the Navy. It uses 5-bit serial Baudot code for communication, a predecessor of the 8-bit ASCII code that later Teletypes would use. We inspect the unit for the first time after an initial rough cleaning. Model 19 Restoration Playlist: youtube.com/playlist?list=PL-_93BVApb5-9eQLTCk9xx16RAGEYHH1q

Why it's here

2 people recommend this

What people say. Recommended as an excellent, detailed restoration series that explains how vintage teletype devices work at all levels.

dpeduon Hacker News • Recommends

On “Restoring a Teletype Model 15”

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. link to this video

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I was staggered by how much adjustment was required when watching CuriousMarc's excellent Model 19 restoration series, seems incredibly finicky. link to this video

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On “Using a 1930 Teletype as a Linux Terminal [video]”

He has this playlist on the same channel where they restore the Model 19, and they explain in detail how the decoder works: link to this video