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The diagrm I have for 475A has the Q1332 base grounded. I am not sure about the readings you have mentioned. I have not gone through the whole manual but just looking at the schematic only. Also, do

Yes, it works better in US units -- "1ns per foot". "3.3ns per meter" just doesn't quite have the same mnemonic quality. --Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford

Wow, that brought back a memory - I attended her talk in person when I was a cadet at the USAF Academy, and that 11.8" has always stuck with me and been quite useful. That would have been about 1977.

Me too. Glenn

To answer a few other questions: I used a blank module kit to build this project, I lucked into one when buying a 'mainframe with modules fitted' at Yahoo Auctions so put it to good use. But I don't

Hi, Wow, I didn't expect such a big response. :D haha As for production of PCB's, I did use PCBWay as they are a sponsor of my Youtube channel, however, they are a slightly more 'premium' Chinese

Thanks everyone for your comments. It certainly uses some early Ge pnp transistors in less critical areas. The lowest 2N number in it is a 2N270 which is an emitter follower for the shift voltage

money, simply money. using SEEED studio as an example, a 113 mm by 246 mm board, HASL (roughly a complete inside of plugin, is 65 dollars for 10, 48 dollars for 5.? ENIG goes to 94 dollars/10 and 75

The downloaded files go into your Windows Downloads folder; check near the top of the folder tree in Windows Explorer. If you are using an Apple computer, you are on your own...LarrySent via the

Some minor fitting and stuff says that either the TM500 shell will work (best), or the TM5000 shell (likely less available).? I think that the 5000 series scope extrusions are the same width and have

Michael, I have for many years and many projects used Sunstone Circuits, located in Mulino Oregon. They do excellent work and have great customer service. They accept Gerber files and also have their

I did all that, saw the .zip get built and then ? ? where the hell'd it go? Bill

In my view, the guy is a skank livin' large in audiophool La-La Land. Not that there aren't differences amoung tubes and not that some aren't demonstrably better than others but $US500.00 for a used,

The email active link was missing a final character; when that was included, the link works ok. And, I was successful downloading all the data. I do agree the download command is somewhat hidden. You

Jared, Where did you get the extruded aluminum panels for the top and bottom of the unit? Were those reused from another module, or is there some way to get new parts? -- Jeff Dutky

I just spent 10 frustrating minutes cursing the genius Google geeks who hacked that can o' worms together and fronted it as a done deal. Bill

A nanosecond just isn't what it used to be... :) --Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070 http://www-smirc.stanford.edu

I've been trying to run through the calibration process for the 475A that had a blown Z-axis amp, and I've run into trouble right off the bat. I was unable to get a visible spot on screen at the +15 V

Ok, I'll ask OSH Park for a quote and compare quotes. Larry -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland)

Why would using Chinese made boards require a different physical design? The author, Jared Cabot, used PCBWay, surely fab'd in China, and provided Gerber files for each of the four PWBs. Since several