Hello to All! I have just bought a 576 curve tracer at a true fire sale price. I have brought it back to life and it is almost perfect. The Horizontal 1's and 5's balance will not quite adjust

The metal channel is in place and in good condition. Both of the handle assemblies are missing- the ends, metal straps, and leather coverings. The leather covering is missing on the power supply

What is the pn on the hv board? Regards, Stephen Hanselman Datagate Systems, LLC

So did Knight-Kit, Regards, Stephen Hanselman Datagate Systems, LLC

Welcome!By "everything missing", do you mean that the metal channel that runs the length of the scope is missing also, or just the two handles? Seems that I recall someone making leather handle

Ken, I had a Jettronix 535 equivalent 50 years ago.  I have a Lavoie La-265 and the CA equivalent.  It hasn't been powered up in probably 15 or 20 years. Sent from K5JLR

An other handy tool for finding shorts is the ToneOhm. Many models available I use the 550A. https://www.polarinstruments.com/products/toneohm/toneohm_950.html Jelcke

Hello, I'm Bruce, KA2IVY, Syracuse New York . I found this group while searching for information on a 555 scope. I got one from an estate sale for a very good price. I powered it up carefully, and

I'm just about to head down the ISA path and I'm reading this, got a recommendation on a USB interface?

I'm new to the group, so please forgive any faux pas on my part! I have long used a TDS220 and still like it a lot. I note that the Measure function, specifically displaying a DC voltage numerically,

By the mid 1960s, Dumonts were easy to find and not expensive for high school kids with "pump gas-cut grass-throw papers" money. The low frequency response made them less than ideal for TV shop

Ok,.. I am looking for some pointers if you would be so kind,... I have a broken 464 scope... the symptoms are as follows:- 1) The scope powers up,.. but the beam is not running correctly,.. ie as it

I'm new to this tekscope group. I was referred by someone at QRZ forum and I hope I'm not being out of line. Does anyone know Dan Shores in Portland. Chris K

I have one of the 2216's and the original owners manual (in poor condition) and would love to find a service manual (electronic preferred). If there are any updates on this thread it would be

I'm guessing that scope didn't have any amplifiers or sweep. That meant you had to have big enough voltage signals to deflect the beam directly. It would be interesting to see more detailed

Bob Albert via Groups.Io wrote: Hello-- And before that, in 1934 General Radio offered an oscilloscope (the model 687) with "useful" response to 130

Not so much a problem, but that the traces are running at about a 60 hz rate, so 10 traces refreshes about 6 times a second (or less, since it's a half cycle).  That's where the flicker/refresh rate

The story I heard was that Dumont himself said that his company would always be the leader in oscilloscpes, somewhat akin to the president of Ford saying the Japanese could never erase the 20 year

Been some time (several years, now retired) since I used mine and loaned it to a friend a few days back to check out-he thought he might buy it- but he reckons it's got too low a refresh

A strange decision for DuMont since they were deeply involved with television. -- Richard Knoppow dickburk@... WB6KBL