As far as I know, my 106 has its original case. This is what it looks like: https://photos.app.goo.gl/uJ2kG29mVRwKTq4F8

Most Type K plug-ins are of the early style, which looks like this: https://w140.com/tekwiki/wiki/K#/media/File:Type-k.jpg There is also a later style that looks like this: https://i.ebayimg.com/image

As far as I know: - The 661 makes extensive use of tunnel diodes and was designed in 1961. - The 585 started using tunnel diodes in 1962.

There is a straightforward modification to a 576 to get it to display the full tunnel diode curve. I did this a couple of years ago when I was measuring a bunch of tunnel diodes. The fixture gets a sh

It is true that there are pages on Tekwiki that aren't listed on the Main page. The will likely be even more true in the future. The Main page (which is manually maintained, not autogenerated) has got

Stan also had a significant slide rule collection. He had a instinct to preserve good things, both physical objects and information. He had a lot of rare Tek documentation, in both paper and microfich

https://w140.com/tekwiki/images/4/4f/Tek_310_silicon_rectifier_mod.pdf

Do we know the original selection criteria Tek used for the diodes used in the sampling bridge?

All, Tekwiki is a website for the community of Tektronix oscilloscope enthusiasts. It started in 2008. It is edited by many people. You can browse recent changes: https://w140.com/tekwiki/index.php?ti

In 2018 I got permission from Mr. Keller to extract data from one of his articles and use it here: http://w140.com/tekwiki/wiki/Cathode-ray_tube#Classic_Tektronix_CRTs_.28info_provided_by_Peter_Keller

Nice. The 567 is an impressive machine.

Of course we can discuss your specific situation. You might also want to read some of the discussion threads in this forum's archive, since this general situation has been discussed many times. Some s

In my experience with scopes from that era, low-voltage electrolytic capacitors (e.g., 6V) are actually more problematic than higher-voltage capacitors, e.g., 300V. Other capacitor-related observation

Tek part number 352-0100-00 is described on page 9-76 of this document: http://w140.com/tekwiki/images/1/18/Tektronix_Common_Design_Parts_Mechanical_Catalog_2_nov_1988_ocr.pdf

https://i.ebayimg.com/images/g/MSkAAOSwhOxZ7597/s-l1600.jpg

http://w140.com/tekwiki/images/2/24/Repairing_tek-made_board-mounted_push-button_switches.pdf

I have no affiliation with this auction and have no intention of bidding on it. But it's interesting. https://www.ebay.de/itm/303423796204

Lazyelectrons has continued the series of videos on the Tektronix 555. There are five of them up now. The latest is here: https://www.youtube.com/watch?v=A0-rZohmyjQ Highly recommended! -Kurt

This scope cart seems to have a TM503 mounted in it: https://www.ebay.com/itm/264244929767 Was that an official mod, or was it just something the owners did to their scope cart? thanks, -Kurt

The addresses of Power Designs in California and New York (in the 1960's) are on the second page of this document: http://manuals.repeater-builder.com/te-files/POWER%20DESIGNS/POWER%20DESIGNS%202015R%