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Do you have a private email address, rather than do all this on public forum? Cheers Craig

Bruce Serial number indicates it was Pilot build/ engineering unit there was a thread about these serial numbers but it was years ago. One of the Tek veterans can probably provide a little? more

Cool. Got a postal address/PO box I can send them to? I can probably scrounge up a few HV diodes too, as they suck for the intended use but would be fine to replace annoying vacuum rectifiers made of

http://www.its.caltech.edu/~hajimiri/pdf/non-linear.transmission.pdf 1N4007's have been used in high voltage discrete NLTLs. Anritsu use NLTLs in theire VNA samplers:

Hi all, Quick check of the FET's learned this: the recommended IRF730 has a input capacity of 620pF The ordered replacement IPA60R280E6 has a typical input capacity of 950pF. Time will tell if the

Hi Bert & Vincent, I'll check capacity specs on the FET's as well -although already ordered :-) - but the good news in relation to the secondary power supply: The scope has been running fine for

(Facedesk!) Right, I forgot. OK -- I've posted the two photos in question to the 'kc7gr' album in the group's photo storage area. Thanks, Dave.

Okay - I'll take a look again at that. Perhaps it isn't as much trouble as I was thinking it was. Thanks, Barry - N4BUQ

Here is what I found on digikey after some searching. 5600uf 50v Nichicons same class as yours. 330uf 160v Nichicon 1500uf 100v Nichicon 560uf 63v Nichicon A couple of them are different class but all

The panel is easy to get off it is held on just two flat head phillips screws and the fuse cover box it lifts off with the cord attached you just need to take off the wires the ground is bolted to the

Hmmm. I'm not sure if that would work with the existing panel and not sure how much effort it is to replace the entire back panel. Also, shipping would start to climb with the panel and we're

I actually have one that is at an angle but it is only a small plastic knob it that helps but all the rest are in the large rubber style boot. I can leave it in the panel if you like that way you

That would probably work but I'd have to cut off the boot and I kind of hate to do that as those are hard to find. Perhaps I'll find one of the "plain" style cords. Thanks, Barry - N4BUQ

I have some but they are the ones that come out in the 90 degree rubber boot. Jim

Anyone know where a replacement power cord can be obtained that matches the original for a 400-series scope (for U.S. power outlets)? Someone cut the ground pin off of my 465B and I'd like to replace

Sorry on behalf of the group for the "helpless" comment. That was uncalled-for when you don't know who's at the other end of the conversation, or what their abilities/handicaps might be. That being

Hi Jim, Thanks for the kind remarks. Unfortunately, I don't think there's any room for another snap-in cap on that board. Here's the list I used. I'm pasting this in with tabs but I have a feeling

I was moving things around today, and happened to turn the tuning knob on my 190A, and the frequency display didn't rotate.? Turns out the rubber donut was cracked/broken in five places (but still

I hate to disagree with Jose, but there have been a fair number of papers on constructing NLTLs --- some even using discrete diodes. If you'd like to read a review of the patents, may I refer you to

I haven't seen a problem where I can pin it down to one of them failing. I'm probably not as critical as others might be, though. Harvey I tend to use x5R and X7R for new designs, though.