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Foolish...no,Freaky...yes. I am very careful around HV CRT's & other potentially hazardous items, but I have been doing electronic design & repairs for 35 years. Recently I was repairing a DuMont 274A

You are correct that the 5103/D13 is also known as a 5113. Stan w7ni@...

My DSA602 has a reference SAW 500 Mhz oscillator with a 5e5 stability. Does it make sense to replace this built in reference by a much better one ? I have a 500 Mhz 1e11 ( tau 1000 sec )

Hi folks I recently bought a 7904, cleaned it up and calibrated it and it is a source of joy. One problem is that it is Option 1, which deletes the readout board (there is a so-called dummy board in

Hello Folks: Does anybody have any general information on this model; dates of manufacture, common problems, unobtanium parts etc? TIA John Foster.

Hi, I'm new to the group. A friend of mine recommended this site to get in contact with those who might be interested in old Tek scopes. Well I have a Tektronix 536 with Type T timebase and Type CA

Hi, I'm new to the group. A friend of mine recommended this site to get in contact with those who might be interested in old Tek scopes. Well I have a Tektronix 536 with Type T timebase and Type CA

Does anyone have scanned manuals or schematics for S-51 (Count Down Trigger Synchronizer Head) and S-53 (Trigger Recognizer Head) that could be e mailed? Thank you, Miroslav Pokorni

the if top (7A26) couple insight This sound's as a defective vertical channel switch.... The same symptoms you would see on a 2445..2465 with a bad channel switch. I had a look at the 7704

Hello all - I'm trying to bring a 7704A back into service after several years of downtime. Everything seems to be working with the exception of the vertical non-linearity I'm seeing. For example -

There's currently a thread in sci.electronics.design on the subject. I posted some links to my spot welding experiments and some commercial data. mike

I need to know which pot needs to be adjusted or a pointer to where to find the info. Everything is fine with the scope, except that the vertical gain calibration is off quite a bit. Both channels

From Zenith's data sheet, the tunnel diode is a 152-0099-00, which is a 50mA/6pF device. Calculated switching time for this would be faster than 60ps - but it all depends on the layout. Any

Hello Miro Best deal is to use an activated flux (acid) you need so little flux on the tip of the solder that you can't even see it. Just tin the nickel plate or stainless of the cell and finish the

Do not forget lubricant, it is amazing what a little bit of grease can do for sliding. I am not sure what would be the best or recommended grease for those switches, but I would try (thick) silicon

for? and The link should be http://w1.871.telia.com/~u87138090 (no dot at the end). /Zenith

wrote: curious about It's and much --------- I have browsed through the cataloges from the time (1965 - 1968) and have not found it mentioned anywhere. I do have a datasheet but unfortunately

Hello everyone, Does anyone have an experience with spot welding tabs on a subC size NiCd batteries? I have a stack of ten batteries which were connected with nickel plated iron (?) tabs, welded at

Do comments from Victorias_Big_Secrets count? He has got more from her than anyone else. Most of his feedback is for buying on e bay, rather than selling. Regards Miroslav

The application for this fixture, that I know of, is gain setting for differential plug-in 7A22. Regards Miroslav Pokorni