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It seems like most people here would actually use a scope. The other side would be those of us that don’t have scopes to use, but to restore and preserve. I only use a scope to fix a different

Well, there's the 400 series, of which I had some, and still have 468s. I have a Telequipment D75 which was well loved at one time (and put aside for other, more sophisticated equipment). I'm not

Phillip Potter wrote on 3/27/2019 9:46 PM: Hello-- Next question: is anyone out there building an oscilloscope from scratch? (*) If so, I have one only used/RFE cast-aluminumfront-panel? bezel for

Hi, As a relatively recent member, I'm unlikely to ever own or have space for a tube Tek, but I'm thrilled to know that people are keeping them alive. As many as possible, I hope. Please keep

It's probably just temporary; at least I hope it is.? I've limited myself to the 7K series and earlier, omitting the portables.? Have to draw the line somewhere! -Dave

Hi John, I suspect that it's just a matter of what's going at the moment. I have seen a number of older scopes being worked on and written about here, over time. I have a 575 that I intend to use,

The point of this on the 2465s is that it allows the user to validate the time base accuracy on the spot. For this purpose, the poor rise and fall of the calibrator are unimportant, as you just line

Hi folks. I have been observing the topics of interest here for a few weeks, and I am not seeing much on older scopes ie before the 7000 series. I am just wondering if this is a temporary trend or is

I don't like the "calibrator" output on the 24x5 series: the period changes according to the timebase so that there is always 5 cycles on the display. At high sweep speeds (i.e. much faster

Can we assume that the reason you used the flashlight in the video is that you plugged it in and blew the mains?

Hi: It's obvious, so you probably are... but, are you using a properly calibrated probe? Regards.

I've got the unit running with a pair of SD-22s fed by a 2 port splitter from the calibrator into ports 5 & 7. I was finally able to figure out how to manually adjust the skew so the two traces

There is this long string of 10M resistors that forms the focus string... They tend to be open. -Chuck Harris john@... wrote:

I have an opportunity to buy a 7934 mainframe. I would have preferred a 7904A but the 7934 has come up. I am not all that impressed with storage tube scopes but ignoring the storage function how do

Hey all. I'm new to the group and trying to restore 475 scope. when I got it, 2 of the voltages were way off. The +110 was about +19 and the +105/160 was coming in at +10.7. The other voltages

According to the recently scanned and released transformer list on VintageTek it's for the 408, 412, or 414 portable patient monitors. Mid to late 70's vintage. Richard

Hello guys I just bought a 7104 fully loaded with plugin for 30 bucks from this guy on offer up in California. But its partially working. I posted a video of what it does. I'm excited to get some

Hi, I have tried adjusting the rear focus control to get a good focus on the screen, but it just 'jumps about' I have tried the trimmer on the main PCB underside of the unit which allows me to adjust

Hi everyone, I bought some time ago (2017) a TEK 2465B that I didn't have too much time to play with (having 2 kids and a travelling job doesn't help!) I have been toying with it lately, and I've

Welcome, I have 1 7401 with this Plug ins: 7A18A , 7A29 , 7B53A , 7b15 I need help rebuilding it. It turns on, and If I give a little smack and play with the buttons, eventually I got a distored