Mr. McGraw does not have the right to resell these files. They represent may hours of research and scanning by the vintageTEK Museum. They will be uploaded to Tekwiki for free download shortly. --

The 7603 was so popular it was produced up until 1992 or so. As a result, there are a ton of them out there. The ready availability, lower street price, and larger screen have combined to make it a

To tie this to tekscopes anyone who can afford a car like that csn afford any tek scope that they want. Sent from K5JLR

I “upgraded” my 7623 with the LM309K mod described in the manual to provide the regulated 5V needed for the push-button illumination, as this is not a standard factory feature on the 76xx series.

Installing a display board requires that one be able to find all of rhe flat and miniature coax cables needed the connect the display board to the rest of the ‘scope. I was able to find a display

IIRC, the 7603N can be converted to the 7603 by adding the readout board.  Individual plugins cannot be N suffix, since that eliminates the readout generation  capability.  I don't ever remember

I have a Mil 7603 (waiting for inauguration in my lab). If I'm not mistaken, there's no DRO on them (but there's some mod to bring it back)? Also, maybe it's an illusion but the display looked smaller

Does anyone know how the PTB-100 Ball Efratom Rubidium standard performs & compares technically (data & experience), with any of the other available frequency standards ? (phase noise, etc...)

hi Dennis, If I understand, from msg# https://groups.io/g/TekScopes/message/144922, Ed states that there were at least 3 different versions of the PBT-100: -- Does anyone know in detail what the

hi Ed, Did you take any *photos* &/or *notes* of the 3 different PTB-100 Efratom devices that you had ? If so, I am hoping you might deposit this information on the TekWiki for our edification. I

The video is ok and all but I got one of those cheap sweep generators that go from 35MHz to 4.4GHz and the sweep function works well but the ramp has to synchronized with the sweep for it to work

My interpretation so far to use a curve tracer in this application is like using a flash light to hammer in a nail. Though the flash light might be heavy and made out of metal and could work, it is

Since it's in for repair it's best to have its own wall wart since the problem could be there. Rather than using your curve tracer to power it, I think you may have the right idea with a variac and a

Thank you Håkan, I see what you are saying now. Since my other 7D20 has only has attenuator problems I'm going yo swap the repaired 7D20 preamp board to it and see what happens. Dallas

" Hi, looking for a technician to help me repair my dad's TS." Hello Dave, Where are you located? Are anywhere near central Pennsylvania? I am sure there will be people here that will volunteer to

Note that a large percentage of the Mil 7603s are 7603Ns. I have a dozen or parts units I need to clean out in the next few months. I'll post here when I unearth them.

Well, it looks as though he has gone away now, so perhaps we don't need to worry about anything. Why do people do that? Colin.

Or, for those with no idea what a Shelby Cobra is, or can do, a Bugatti Veyron or Aston Martin Superleggera (or even a Bentley Continental). Colin. (Sorry for the excessive automobile references when

What precisely are you trying to do? A 'scope display will be pretty much useless unless the sweep voltage is synchronized with the waveform being displayed, thus the development of triggered

I have spent 50 years repairing broadcast equipment. I strongly suggest that you pass the SX204 on to someone with a reasonably well equipped shop, including variable AC and DC supplies, rather than