Bill, Thanks - I saw that link and am interested. I'll go back and find it. My thought was just for powering the plug-ins, but if you're going to do that, why not use the inputs/outputs also. Steve H

Has anyone built a tester that would provide all the normal power to a 7000-series plug-in? Would it be worth doing? Maybe a way to do a quick "smoke" test of plug-in not known to be good. Outside of

I found these at DigiKey: https://www.digikey.com/products/en?keywords=NTE%20TP0001 Note that they are an insulating pad which it sounds like what you originally found. For boards that connect to the

We see cases of berylliosis (the beryllium lung disease) around here because there were a couple of aerospace manufacturers in the area. Beryllium is widely used in aerospace applications because of i

Beryllium and compounds have an unusual toxicity profile. Beryllium is not directly toxic as, say, arsenic is. However, how it harms you is to cause an intense allergic reaction. In the lungs, this re

Reg, You mentioned "a pair of 106s" - Hewlett-Packard frequency standards? Those were very accurate quartz standards and hard to find. I once turned up a couple and they worked but had been heavily mo

The discussion of strobe lights and Harold Edgerton brought to mind his work on the "Rapatronic" shutter which was used to take photographs of early atomic tests. Here's ab it about the Rapatronic: ht

Karl, Now THAT is what I call very serious restoration work! Nice going! Steve H. verizon.net@groups.io> wrote:

The P7 phosphor has blue fluorescence but yellow-green phosphorescence. It is a long- persistence phosphor so was used in CRTs for low frequency biological signals. On a bedside patient monitor you co

The link is to a PDF document from the SPIE on glass for CRTs. It is quite thorough, even to the glass formulations: https://spie.org/samples/TT54.pdf and this link is to an article about the recyclin

Any of you ever see a hydrogen thyratron with a greenish glass top sealed to the cap? Look up 4C35A as an example. That glass is uranium glass. It is known to antique collectors as "Vaseline glass" be

Search eBay for "Variac". Here's an example of a 10A one: https://www.ebay.com/itm/Transformer-Variable-AC-Voltage-Regulator-Metered-1000w-10Amp-110V-Auto/173189420709 Not made in the US. One thst is

I have heard that the major reason that the small spool of solder in the 500-series Tek scopes was usually gone because of its silver content. A scrapper once told me that the ceramic terminal strips

I don't collect tubes, though I have a couple of unusual ones (I saved an image orthicon from the scrap heap and I have a couple of x-ray tubes). I had a Burroughs beam switching tube - they were used

A Tek 7L series spectrum analyzer for RF work (7L12 and higher) is going to be expensive if it is working and even more expensive if working and calibrated (just search eBay for Tektronix spectrum ana

Jeff, Ah - I see from the link that I gave that they were called "Compactron" tubes. Steve aol.com@groups.io> wrote:

Jeff, I have a series of various telemetry receivers - mostly DEI and Microdyne. These are all solid-state as far as I know (the ones I've opened up). I have a couple of oddball Microdyne 1100 series

I found this thread on Stack Exchange: https://electronics.stackexchange.com/questions/66853/why-is-the-circuit-board-abreviation-for-transistor-q How about "U" for integrated circuits? Steve H. wrote

Yes - Anthro was a spinoff of Tektronix. Within Tek, they built carts and the likeca for various instruments (remember Tek plotters?) and they later became a separate company. I bought an Anthro cart

Dave, Sorry, I don't know if Stanford still has a walk-in public property disposal store. My visit there was at least 20 years ago. I agree completely with you about pricing of desirable instrumentati