> Group Owner:TekScopes+owner@groups.io

Dennis or the group owner? Vince. -- Michigan VHF Corporation -- nobucks dot net K8ZW - http://www.hamradio.fun

Greetings, Does the site moderator (owner) have a dedicated email address for contacting “him” outside of the normal group traffic? Thanks for your assistance. Regards, Ken

I've wondered this for a long time, the probe compensation / calibration signal ports on the 76xx scopes, as well as on the 2200-series portable scopes (and others?) are small round sockets whose

Seems much better than using the analyzer meters alone. Does your analyzer tell all the parameters of the DUT?

Yes, this had EG&G cal tags. Not sure if Sandia or Los Alamos origin though. The stuff comes form multiple companies wanting it off their books, some comes in oversize cardboard containers bigger

I am not surprised that you found that unit in New Mexico. It was likely the property of Sandia National Labs or Los Alamos National Labs. The nuclear testing facilities in Nevada hosted many

Adding to the discussion, my setup of a 576 with a Metrix U61 (tube analyzer (as heavy as the 576). Its perhaps the most versatile analyzer around. I just had to plug the base voltage into G1 and the

There is some info about it in the TS-4353/U Distortion Test Set Op Manual... the plugins for the test set fit into a moded TM504A. The test set manual is on TekWiki -- Roy Thistle

Thanks George KD6NEW, I like the practicality of your adapter and using inexpensive 575 CTs! Is the 400V mod something you can add easily to a normal 575? -- John

In terms of current gear. The "modern" way of testing would be with 2+ SMU's depending on the number of dynamic voltages you want to sweep. You can get one up to 1Kv for the anode voltage but you

Noting all the ongoing comments on extenders, I do have 6 new factory parts, p/n 131-1078-00. These are the heavy green 56 gold contact double-sided PC mounting connectors, with slots for keying

Many thanks Guys for the informative advice. Particularly regarding considering other models in the 57* family. As emissionlabs says, the AVO VCM163 is highly thought of here in the UK. Never owned

Wow! Emissionslab, great page on the 576. Your repair notes will be super helpful. Great detail. Chuck, Love your tube tester solution. Very nice documentation. I’ve book marked both pages. For

I bought a couple of Dennis's VTCT boards when he first produced them. I built a couple of crude adapters to use on my 576 which worked pretty well but were cumbersome to use. I didn't like the use

Hi, Does anyone happen to have a manual to suit the TM504A? I just picked one of these up today, but I can't find much online. Thanks! Jared

Thanks Håkan! So that camera bezel was factory mounted. Mystery solved.

This is a well known and documented problem in the 22xx line. There is a string of 5 (or 6) 510K resistors that over time change value and produce the focus problem in some cases even going off the

Hello Dave, I have had some 50 different tube testers in my collection. People sometimes think a curve tracer is useful for tube testing, but a curve tracer is not a tube tester. When the tube is

No affiliation. https://boston.craigslist.org/nwb/ele/d/haverhill-tektronix-2465b-oscilloscope/7368845218.html Jay