https://stream.echo6.co/videos/watch/3bd954cd-4bec-4ed2-b6ea-ab2cc0d166f3 Warranty VOID if NOT Removed T-Shirt: http://teespring.com/warrantyvoid2 What's inside a 1975 vintage Tektronix 213 portable oscilloscope/DMM combo? Forum: http://www.eevblog.com/forum/blog/eevblog-628-tektronix-213-vintage-portable-oscilloscope-teardown/ High res teardown photos here: http://www.eevblog.com/2014/06/11/eevblog-628-tektronix-213-vintage-portable-oscilloscope-teardown/ Specs: http://www.teknetelectronics.com/DataSheet/TEKTRONIX/TEKTR_21325410.pdf Brochure: http://www.testequipmentconnection.com/specs/Tektronix_213.PDF Datasheets: Trigger Chip: http://w140.com/155-0048-01.pdf Decade Counter: http://www.datasheetarchive.com/dlmain/Databooks-2/Book271-73.pdf EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/ Wed, 10 Jun 2026 08:33:03 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/3bd954cd-4bec-4ed2-b6ea-ab2cc0d166f3 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.