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  1. Tomas SA2TMS (tomas@social.umeahackerspace.se)'s status on Friday, 14-Sep-2018 09:08:56 EDT Tomas SA2TMS Tomas SA2TMS
    Thyratrons good http://www.righto.com/2018/09/glowing-mercury-thyratrons-inside-1940s.html !elektronik
    In conversation Friday, 14-Sep-2018 09:08:56 EDT from social.umeahackerspace.se permalink

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      Glowing mercury thyratrons: inside a 1940s Teletype switching power supply
      We recently started restoring a Teletype Model 19, a Navy communication system introduced in the 1940s. 14 This Teletype was powered by a b...
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