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Hello all: These models are very similar exept for the bandwidth, 150/350..400 MHz \. Are the input attenuators the same? 119-2342-09, 119-2342-10, 119-2342-01, 119-2342-05 119-1445-04 119-1445-05 The

ISTR that on the 24xx series 'scopes that you can use the Ch2 attenuator for Ch1 by rerouting the cables that drive the relays (and vice-versa). Apologies if I got that wrong... David

Hello all, am working on late SN 2465 B, for museum ( non-profit ) use. has a Blown CH 1 Input attenuator, the ceramic hybrid is broken in pieces. Need a CH 1 Input attenuator TEK part 119-2342-09, OR

Do these get much use anywhere but radar design? Should they just be melted down? Available for $8 + $8 shipping (US) for all three, with screws, nuts. WR-90 TO WR-112 waveguide transition is alum by

Same scams on Craigs List (USA) leBon Coin (France) Ebay, so called "social media" if it looks too good a deal its a fraude. The Chinese and other get better with AI ads. Finally 577 576, and large MF

Yeah, I think I found the site and the current seller is called Mina. The seller has a lot of furniture and a lot of test equipment. To me it looks like a typical scammer.? They build a list of

We used Dolph electrical varnish, heat cure. The silocones are not reccomended for transformer impregnation as air voids can form. The wdg lay is optimized if perfect lay, L>R rather then cris cross.

The HV transformers that I have built, I have sealed under vacuum with silgard 184 or Dow RTV 615. Note that in high frequency switch mode transformers, winding direction is important. I have on a

The drawing is very helpful - but one thing it doesn't mention is whether or not the HV 1500V winding has any special construction (since there's quite a potential difference between the ends of this

Jared, Kapton is very bad to work with as it tears easily when cutting to fit botbbin. Most HV trsf use Mylar tape like 3M56 (yellow) The wire depends on the original design, usually we use Solderable

Can you use Kapton tape instead of paper? Jared.

Here is a link to the service manual: https://w140.com/tekwiki/images/1/12/070-1195-02.pdf Here is the link to the transformer winding details I just uploaded:

Hi, My 7904 HV transformer in the PSU is giving trouble. There has been corona type discharge from LV secondary windings and on taking it out the transformer paper is burnt away in places. I guess it

The 2n5566 jfet was not working properly, the part listed as Q604A in the 177 schematics . I’ll try to change that one and see if the problem will solve. Do you think that this faulty jfet could be

Thanks for your reply, the calibration and the relative adjustments were done when I brought the tracer home a month ago and it passed all of them. Now the traces are 2 vertical division in the 10 mA,

One thing to note that is really important on the 577/177 is there is a calibration routine for the 177. This needs to be completed FIRST before the frame (577) calibration will converge. If you are

On Sun, Oct 13, 2024 at 11:07 AM, Dave Voorhis wrote: > > > > I have two 577s and haven't seen your problem, and changing the intensity > pot itself almost certainly had nothing to do with the

I have a major update, today when i switch throught all the minor vertical/div settings the yellow light of overrange doesn’t light up, when switching by the 50 to 20 and 10 mA i’ve noticed a lot

I have two 577s and haven't seen your problem, and changing the intensity pot itself almost certainly had nothing to do with the problem. It sounds more like there's been some reassembly blunder or an

The curve tracer was fully operational,i ran through the whole calibration/adjustment steps when i brought it home, than i realized that when I tried to set the intensity the pot was moving but in a