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G.E. is no longer into it... and Glyptol is now a brand (for at least a couple decades)... and like a famous de-oxidising snake oil (not really for snakes: either the plumbing kind... or the reptile

I guess that depends on what you call "work well". You just won't see (part of) the triggering edge but otherwise, the image is fine. Apart from it possibly being a nice exercise, I don't see the

The fastest sweep the 7603 is "specified for" is 5ns/div which is obtainable with a 7B53A set the highest sweep (.05us/div) with the x10 multiplier engaged. I'm amazed you find the 7B85 or 7B87 work

[email protected]> wrote: There's nothing wrong with your English that isn't also wrong with mine :). Interesting. It would help to understand how the different colors refresh. My guess is that

I found this online - a reprint of an article apparently from Antiqueradios.com on rejuvenating vacuum tubes. There is a fair bit of discussion on cathodes and their emitting

thank you. I can find a sweep at the base of the Q784 (output driver) and nothing after. I have correct voltages for the line voltages -15V and 50V Other voltages are as follows (with a time dev of

True, except that my 561A's and 564 do use a 6AS7G (which is identical to a 6080) for the +300v regulated supply and the +125 reg. The plates of the 6080 are +420 unregulated and +210 respectively,

I can’t help you, but the Dropbox link works fine.

Again my English, supposed to be "...warmed up"

Here we go; first, I believe that it was my poor English and I wasn't properly understood when I tried to explain what I see and I apologize for that. Second, Siggi, you may be right about an issue

Hi Roy, This is an arguable subject, and by its nature, chock full of ill defined variables. I can only speak, with first hand experience, to the efficacy of "rejuvenation" in Tek CRT's

I need the N50/T125 ones to finish my set of 519 accessories. Anyone want to split these with me if I buy them? I do not need two more T50/T125s. Sean

It wasn't recognized until the vacuum tube era had ended that cathodes are actually semiconductors, whose electrical properties are exquisitely sensitive to morphology and trace impurities, as your

As a tidbit of trivia and only a little bit off topic. Eimac tried to build, I think it 8877's, at their plant in Salt Lake City with not much success. They determined that the "air in SLC was

I'd say the anode straightforward to +5V and pull down the cathode via a trimpot. I assume an isolated power supply for the TD circuit part its +5V connected to scope GND. Usually the switch of the TD

Hi Bernd, As I said, anything that fits on the usual ferrite core, and uses the usual cardboard former for the winding can be wound with my machine. So, it's all the same to me. I will make up the

Hi Charles: I read through a two decades old PHd thesis on CRT cathodes. ( as anyone can too! There are any number of people posting here who will first humiliate one.. but, explain things one might

I have bought from them before and have had no problems except when they were out of stock and cancelled my order of some stuff. I don't think you will have any problems with the quality of the parts.

I do hope you are able to add 561/4B, 549 and 556, at some point...B

Gold plated GR874 connectors are almost guaranteed to be 125 ohm, and applicable only to the 519.? I used to search hamfests and swap meets for them, and you can spot them a long way off.? The