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Are the Tek dual FETs that special in this application? I don't know anything about the SC502, so I'm just asking, because I have a Heathkit IM104 FETVOM I built circa 1970 that has a dual FET in it.

Hi, I think we are in a different time zone, I always get the messages as soon as a leave the workshop and go home. Good information about the 5 2 1, it makes sense there's no second sweep because

It doesn't look like the correct case to me.... and I've two of them. This is what I expect it to look like: (Not my image, wantonly ripped from google.)

I had connectors that weren't making good contact and I think I bent a couple of fingers finally (this was a long time ago). So I bought a backplane from Deane Kidd and swapped them. It looked like a

Also, it comes in a rather unusual (to me) case, which does appear to be stock. /g/TekScopes/album?id=261997 That certainly looks like a Tek case, but it might not be the correct one

My SMB-to-BNC cables have Radiall (top quality) plugs and they are a pretty tight fit as well. Much tighter (subjectively) than an average GR874 plug, and with a click, of course. Raymond

Stephen Hanselman wrote: I guess I expected that the outer housing might be spring-loaded and that pulling on it would loosen the outer "fingers" that grip the barrel of the female connector. Instead

Normal, if they were loose you'd be in trouble steve

Dennis, I have a 7603 that has a readout board that is completely toasted. When I got it the plugs were switched and the 130V rail was fed to places it should not have been and did a ton of damage to

I haven’t had to recap it until yesterday... And I’ve had it for quite a while now. It ran without any issues. Fortunately the bad caps didn’t take anything out in the way. They were not even

One of my favorite scopes (the venerable 7603) had some intermittent issues with the on-screen readout for some time. Usually I could encourage it to work by pushing the plugin in firmly or applying a

Sorry Eric, doesn't apply to what you did... Raymond

At 0.5V, it's 1 ns max. Raymond

Now Raymond has me thinking I might need to check the rise time when I get back in to the lab tonight on mine make sure my BNC jack did not roll it off to far. I did the mod because the GR to BNC

Stephen wrote: Yes, I'd say at least twice the diameter. There's not much space on the face of the DC505, so I don't think I could reasonably replace the SMB connectors with SMA connectors. Even if I

Hi to All, Early Type 519's have Nickel Plated GR874 Outer Connectors. I had one of these. Later Type 519's have Gold Plated ones. This change is described in the latest Manuals. Greetings, Egge Siert

I already have a 184, which I actually just recapped after it started acting very funny. (A little parentheses on this. It turns out both the 700uF and the 2000uF read 0 on the cap meter! The 700uF

Good progress. 485 uses B sweep generator for 5/2/1ns settings even in A sweep setting. Since you are seeing functional 5/2/1ns in B sweep it is a problem of scope not selecting B sweep in 5/2/1ns

I was actually thinking of leaving it alone, if not for the reflection issues, at least from a historical perspective. I’d like to find good GR874 to BNC connectors, preferably in Europe

For everyone who was interested in these crystals I LOST YOUR INFO. I need your mailing address so I can send these out to you. The price will be $10 per crystal. If you want an extra one, and I have