The recent discussion about tunnel diodes got me wondering about when they were being designed into Tek instruments. Questions: - introduction date and model of the first Tek instrument with tunnel di

For people in the Seattle / Puget Sound area, this person has several vintage Tek scopes still for sale. Quite a few of them are 500-series, and a couple have carts, so these items are for local picku

Hi all, I was starting to check and calibrate my 465B which I haven’t used in a very long time, when I noticed that channel 1 behaved very oddly on some settings (mainly but not only .1 and .2 V/DIV).

While waiting for my Schottky diodes to repair my S-1 (and possibly my S-2), I did some searching for currently available substitutes. The late, great Bob Pease once wrote: "One "diode" that does turn

Hey y'all, After the talk about grounding and X caps, etc, I figured I'd take a look at the 465B power supply schematic. To my surprise, it's a linear supply, no switching there and hence no noise sup

Hi guys, I was checking my 485 against calibration 1kHz and 1MHz signals. - 1kHz is nicely displayed by the scope. - 1Mhz is not giving me a "perfect" square wave. I hooked up my cheap FY32124S functi

I just checked the UPSP tracking info for all the tester board set shipments mailed on 2/11/2021 and find the following on 2/20/2021: 1. All but one USA shipments are delivered 2. One USA shipment to

Hello I am interested in refurbishing a Tek 7854 for myself. Is the board and overlay by Holger Lubben available for purchase? Are there certain serial number machines to which this board applies? Are

From Tim P (UK) I ask here as I saw this mentioned regarding a Tek 22xx-series(?) My problem is a Philips PM3311 which popped a RIFA capacitor, with copious amounts of smoke. The PM3311 has this cap a

Dear friends, after several years I participate again in this forum about tek instruments. It's been several years since I posted here the last time. This was referring to the well-known scope 2465B.

These just keep turning up in places I didn't expect, so they are now added to the stuff day page here: https://www.sphere.bc.ca/test/stuffday.html#tekfans I was also able to identify 465B and 2205 kn

Hello again: The continuing saga ... (see my pervious posts re CTT and vet nonlin) 1/ New U400 channel switch 155-0236-00 has fixed the CH1, 2 nonlinearity. 2/ Chuck mentioned that the CTT test fails

Steven here, New to this Group, but not new to Tektronix, or various repairs. I have and love my working Sony/Tek 335, and Sony/Tek 336 small Oscopes, may they show traces forever! I also have (4) not

Hi All, It bought a Type 284 Pulse Gen off Ebay a few weeks ago. I had planned to get it up and running so I could tune up my 5S14N sampler, which will help me fix a TG506's 1ns issue; when all of a s

Thank you one and all for your suggestions on removing the potting. Your suggestions fell into two general categories: 1) Nasty chemicals which I decided had to be avoided at all costs based on your a

Few things are as frustrating as when the vertical knob on a Tek scope is damaged, by cleaning (hah, you didn't know the printing washed right off, did you?) or mechanical wear or other damage. Many d

Hi Dana, The Rockland Instruments 7530A and 7530B Spectrum Analyzer plugins for Tek 7000 scopes are outstanding, and unique, Spectrum Analyzers. In the mid-1970s Rockland Instruments was a small compa

Hello everybody, I have followed this forum for a couple of months. Seems to be full of information. I have just re-capped 7603 mainframe successfully. Both vertical slots basically work (tested with

The 6DJ8 is a 6-volt version of the very expensive 8416. I assume a mod as simple as adding the appropriate resistor to the heaters. Has anyone done this before? -- Respectfully, Cliff White, W5CNW w5

Hello, sorting some of my plug-ins in very different condition I have come across the following "almost twins": 1. A well known CA plug-in, in working order, has always been a good work horse with my