Nice! I received this water-stained carboard box today. Inside is an brand new spare part that probably hasn't left this box since 1964. I've been looking for this for over a year and had pretty much given up - then this turned up on ebay and I got it for 10€. I'm pretty happy, cause now I can finally fix that damn machine. (1/2).

The machine is an trigger oscilloscope from 1965, and the part is a picture tube. The oscilloscope is a tube machine - not a single transistor in there, but 13 tubes! Back then it was a "portable service oscilloscope" - it's massive and weighs over 15kg. Nowadays a cheap microcontroller can easily outdo it. Not really sure what I'm gonna do with it when it works. πŸ™ƒ (2/2)

Show thread

Swapping the tube was even harder than expected. But it works! Well, somehow. Most controls don't work and the trigger doesn't really...trigger. But that's likely the first time in a long while it has actually done anything. The last calibration seal on this thing is from 1975.

Show thread

Maybe today is a good day to post oscilloscopes. This is also mine, and on permanent loan to @maschinenraum (realistically I'm the only one to use it anyway). I love that I know its history - it was used to calibrate the read/write heads on the mainframe tape storage of a nearby company. Still has the "state property" sticker. I got it from a old guy who worked there and just took it home when they scaled down & fired half of their workers after the reunification. Fuck capitalism and all that.

Show thread

ok, last oscilloscope for today (it's not like I have more, I'm not *that* crazy). I bought this over 10 years ago, I needed a scope and it was cheap (it had some problems). I was lucky, it's a nice model with some useful features, and it just works. I use it for work, projects & stuff. I used to carry it everywhere when I held workshops, which is super annoying (it's really big and heavy) - that's why I eventually just got a seperate one for the hackspace. πŸ˜„

@kay absolut! deswegen mag ich das teil auch :) ich habe aber trotzdem mehrere jahre gebraucht um die meisten funktionen auch nur ansatzweise zu verstehen, am anfang habe ich einfach dran rumgedreht bis was angezeigt wurde πŸ˜…

Sign in to participate in the conversation

The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!