Now that the B intensity pot is moving freely, put a meter on it to verify that it is electrically OK too. Tom

The channel 3 and 4 volts/div for the 2445 can be anything you want as long as you want 0.5 volts/div or 0.1 volts/div. It is selected by a pair of push buttons, one for each channel, between the chan

Dennis, I got the same garbled email as you got. A search for "Tektronix P6042 current probe is a classic" got the EDN article as the first hit. Tom

That's a Nagra IV-SJ stereo tape recorder. It was an instrumentation data recorder, although it works for audio too. From Wikipedia: On 9/11/2019 8:01 PM, John Griessen wrote:

I'm pretty sure that the Arc files were transferred to the groups.io photo library. Tom

How?

Most men will know that is a question best not asked. My scopes: 2232, 2246 2445, 2465 7704, 7844, 7854, 7904 TDS210

Necessary: No Appreciated: Yes

Donations now at $6040. Time for them to start shopping.

It's Vuescan by Ed Hamrick: https://www.hamrick.com/ Tom

If you go to the donate page at: https://www.youcaring.com/vintagetekmuseum-1085244 you will see that the goal is $6000. Current donations are at $1230. The video apparently shows them testing the dem

I believe the 2465 A/B use a battery backed RAM for calibration values. So at some point it needs to be replaced and re-calibrated. The 2465 doesn't have that problem. A problem that the 2465 does hav

For an explanation of where that noise in digital scopes comes from see this video: https://www.youtube.com/watch?v=Znwp0pK8Tzk

Fabio, That is a good point. What you are thinking of is probably K&E's Leroy lettering sets. Tek engineers would have been more likely to have Leroy lettering sets at hand, than a collection of fonts

Chris, You can take a good closeup of some of the text that you wish to match and upload it to any of a number of online font ID tools. Examples are What the font, and Fontsquirrel. Do a search for id

It looks like a Heterodyne wave analyzer. I don't know the manufacturer or model number. Tom

I have one. It works well. Besides using the rise and fall times displayed on a scope to get an idea of the bandwidth, it is also interesting to see what the square wave looks like on different scopes

For comparison, I get 0.89 nsec rise time with my 2465 using the same pulse generator. Your 2465B should be better than my 2465. Are you measuring the time between 10% and 90%? Tom

A tantalum in a 7A26 shorted so I set it aside to be worked on later. Then a couple of weeks later another shorted tantalum in another 7A26. Seeing a pattern here, I ordered a bag of tantalum capacito

I second the suggestion to use PayPal. I'll send money as soon as it is set up. With all of the active users here it shouldn't be a problem to raise $99 per year. I prefer to deal with firms that char