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Another thing about wills -- in Texas at least, they are good for four years, then need an update.

So, no interest expressed in the Type 531 scope....will probably drag it to the salvage yard. Hate to see it go, would have loved to see it help other similar scopes restored, but I have no use for

Hi Ram. I should have updated that project long ago, but didn't have time to work on it. I'm really glad that you succeeded in making a functional extender. Maybe when I'm back on that project, I'll

Well... and from a multi-year reading of posts on groups.io, EEVblog, et. al. ... I reckon the above situation is significantly because some buyers have p'd off vendors (both the clueless and clued)

Thanks for the insights Albert. Makes a lot more sense than just a design that relies on just leakage alone. In the "T.D. Bias Current" portion of the SM Circuit Description it describes: "Q74 reverse

Everybody should inventory their stuff. Remember that Excel allows pasting photos into spreadsheets, so you can (and SHOULD) include at least one photo that identifies each significant piece. My

Yes - I know these folks and have followed their amazing story on YouTube. In fact, I was contacted by the fellow who owned the computer. He knew what it was (it has the tag on it) but from previous

My wife has suggested that I photograph & do a data listing of important or rarer items with some history etc as appropriate. Recently I started using a Password manager that has a neat "Legacy"

I have been looking for a situation where in situ testing is not that easy. In the 3T77 trigger pulse TD D42 has anode to GND via a T42 winding, and the cathode via 5.1 ohms R41. Just a slightly

Here are a couple of things you can see with a 1502, e.g. SMA connector discontinuities 2-3cm apart. It also discusses the "architecture" and shorting strap, with a picture "researched" from tekwiki.

Well said, I couldn't agree more. -Dave -------------- What will live on? One's kindness, compassion, caring and love. It will be un named but it's influence can be far greater than we can imagine.

The 1502 uses a tunnel diode, and the waveform looks like a step.? You look down the road to see what happens.? However, the 1502 has a range that is 1/10 that of the 1503, and thus increased

Hi Ke-Fong Lin : I recommend you put this observation in your github page or (preferable) update your KiCAD files. I got the boards made in June and had to get a fresh set made with the correct

Martin, I forgot to say that if your scope and any other Tek. items have any 151-0367-00 transistors, check them. These are likely leaky from C to E as a diode. Any of these that have round leads will

I wholly agree with Tom Gardner’s comments. Playing with the BNC connector may be converting the 1502 into a parts unit. Besides, the 1502 was designed for a specific purpose and Tek engineers

If you don't already know of this effort - you may enjoy reading this and from there connect with people who surely would appreciate that equipment and have motivation and qualification to do

Martin, The high brightness is likely bad d-c restorer diodes being leaky. Replace them with 1N4937. Also replace the 22meg 1/4W carbon resistor near that circuit with a Vishay VR37. This is a 1/2W 1%

Seems as though some young person could go out to gather up estate equipment for free and put it into a warehouse to be sold at a fair price to needy technical people. Nothing should end up in

Good advice all. Thanks. The sad thing is I collected a lot of this stuff to save it from the fates you have described. But now after I am gone to who knows if it could meet the same fate. I remember

Ken mentioned mentoring someone younger. For me, not mentoring so much as providing equipment to work on. Over the years, I accumulated quite a few Tek scopes. Not nearly as many as some of you and