To learn more about electronics in a very different and effective way, and gain access to my circuit designs and inventions, click here: www.patreon.com/MrCarlsonsLab

I've watched so many hours of Mr. Carlson's Lab, they sent me a Ham radio license.

It's just like with photography. It's not the expensive equipment that takes great pictures. It's the individual that pushes the button that does that.

Again,,, 3 days in a good school or 57 min with Mr Carlson

yet another captivating video... I would like to offer a little tip for you and the viewers: When you have a calibrated dial plate with setscrews to reset, as with the wave-meter @ around 11:50 in the video, sometimes it's actually easier to employ a simple modification to the setscrews to eliminate the annoying "walking" of the plate off the intended setting, that comes with the tightening of the setscrews. Just take one of the two the setscrews out and file down the end that contacts the shaft, concentrically, to a circle about one , to one-half a millimeter in diameter. You want a fat, shallow, blunt cone. When performing the alignment, tighten the modified screw first. This also gives a more secure set with less applied torque. You can even feel the difference as you tighten the Allen-key. You've probably seen high-quality knobs and dials, and other setscrew devices that have screws machined on the end in this way...... The trick is especially helpful if the setscrews are not cut-off evenly , where part of the circumference is higher, and only it contacts the shaft.

when mr carlson told me that the magic was not in the test gear... but in me. i teared up a little bit.

“The magic isn’t in the piece of test equipment; the magic is in you”❤️❤️❤️

I always knew I was pure magic. Now Mr. Carlson confirmed it. Hell yeah!!!!

That required a ton of patience and confidence to even attempt that restoration. Amazing work! Absolute perfection.

The precision that was common in the past amazes me... Electronic, Building and machine work was always done with much more attention to detail... As a kid I always loved the smell of warm tubes..

Far better designed chassis than my RCA Chanalyst for sure! It has an oscilloscope for Pete's sake!

Since I watch Paul's videos (typically 4 times each to make sure I don't miss anything) often, I must say that his approach is exactly the same as mine. [Or vise versa!] He is typically the fussiest and most complete thinker and tinkerer I can find! Many thanks to him for his unwavering efforts to get everyone up to speed on everything electronic! de KQ2E

I was in a technical electronics course in high school back in the 80s. We had Heathkit VTVMs and we called it "rocking in" when we were setting zero and near full scale on the D'Arsonval meters.

My late father built one of the very first TV receivers to operate in New Zealand, and serviced most of the lighthouses in the North Island (Ship to shore weather collecting data I believe) , He also built a wonderful point to point wired SSB receiver (some 21 valves inside ) that I would love to restore to be fully functioning again one day, there are no schematics and I am just a layman when it comes to electronics, when I look under the hood this tuning module / section of the unit has always looked very scary, (It seems to have some kind of feradyne casing around it to keep RF out). One day i hope to find another Mr Carlson in NZ or in this part of the globe that can help me in my quest before that knowledge is lost for good, Unfortunately so many of the old folk like my father are now gone and I have heard the Radio Meets are somewhat depressing to attend due to the ever increasing list of folks now gone. Thank you so much for your channel, I'm not about to dive into anything with high voltage ( as you once stated in another post the days of high voltage electronics are over) but should I find another Mr Carlson one day at the very least I will be able to follow along and speak a common language thanks to your channel, so again thank you so much. Your methodical process and knowledge is scary, your work bench even scarier, Mystery object = There seems to be no mechanical adjustment that I could see but Is it some type of cavity filter ?? It is made from a old fibre that I recognise is heat resistant so it may be some kind of rudimentary power resistor . Hey just a guess Like I says I'm no electronics engineer but I have a few clues...

I do not know if you are familiar with Electric radio magazine. I have printed every issue since issue 60, July 1994. Your videos are very interesting and helpful in clarifying technical aspects of some of the articles I've read. Your lab rooms are amazing. Thank you for sharing a small portion of your knowledge.

Proper and correct Alignment for any vintage radio is a talent understood by the few technicians of today.

i've really enjoyed this series on restoring this tool. keep up the good work.

This was a great series really appreciated.

Let me be the software guy to say that I am floored by Mr. Carlson's videos - excellent material! I do a lot of tube work as well as solid state work too, along with software, but the amount of detail here is amazing and I learn something every time I watch one of these. I like many other engineer like to analyze things and keep tuning and optimizing circuits and this vedolizer is just an amazing piece of work that shows just how much engineers back then focused on perfecting their design. As a closing note to Mr. Carlson (who's first name I learn is Paul) is that I enjoy the verbiage around the "Current limited isolation transformer and Variac supply", it is a mouthful. I'll call it CLITVS from now on :).

Little do we know that Mr. Carlson is giving us a Supreme Alignment each time we watch his vids. He knows the human mind is not much different than the things he works on; an electrical device that operates and performs a myriad of tasks in a fairly complex 'machine' replete with very similarly functioning components.......they just look different. If you turn the volume low while watching his vids, you can just barely hear him in your head freshening up some lead dress.

Hi Paul, it is amazing how accurate that 80 year old piece of test gear is. I never would have guessed that it was going to turn out to be that accurate. Also you are to be commended for your seemingly infinite patience with this restoration. That is something electronics taught me many years ago was how to be patient without getting frustrated, or at least when you do get frustrated walk away, then come back to the project later with ”fresh eyes”. I am currently restoring an ITT Schaub Lorenz International Touring Marine receiver that belongs to a German Professor of Biomedicine at Univeristat Rockstok. It belonged to his father who often traveled back and forth from Germany to the United States by ship. He would sit on the deck and tune in shortwave broadcasts to pass the time. Needless to say, the sea air was not kind to the switches. I am having a great deal of trouble locating a replacement power switch. The Professor has friends in Germany searching for one but they are not having any luck. It looks like a standard DPST rocker switch but, the contacts are in a tandem orientation rather than side by side, and the single mounting screw is situated right through the center of the switch body between the two sets of contacts. There are tiny broken plastic pieces inside the switch that I have been unable to duplicate. Frustration; There is no other way to mount a replacement and make it look original. The manufacturer only makes turn signal stalks and specialty switches for luxury German autos now. I was told by a factory representative that they sold off all of their old parts in the early 70’s. But, we keep searching because the professor wants the radio to be just like it was when his father sat on the deck of a ship crossing the Atlantic annually. There is where the patience come in. Great video I can't wait to see the Supreme Vedolyzer in action in up coming videos.

Every time I see one of your vids in my feed, it makes me genuinely excited. Great video as always Mr. C.

I have little knowledge of radio repairs but your videos make me want to learn more .👍

I'm just here to watch something smart while I go to sleep😄 Cheers! 👍

Thanks for doing the Vedolyzer alignment on camera Paul. Great video as always! Michael, KE4EST

The magic is in you :-)

Excellent - this is exactly what I was hoping you'd produce; a treatise on alignment without manufacturer's data.

I did a little googling and the only thing I can come up with for the trivia question is... the device is a resistor shunt but truthfully I don't know. I have recently dug an old hallicrafters sx-71 out of the garage that I've had since high school and decided to fix it up, it powers up and works but not great, it looks to be original, meaning original capacitors/resistors. I started researching and came across tomtektest's KZfaq channel which has began a great learning experience for me. I have found a lot of great KZfaq channels and came across yours. Thank you and all the other KZfaqrs I have subscribed to for your contributions they have helped immensely. Next stop Patreon!

I used to work on electronic gear until I got a pacemaker put in .Love to watch you work on the gear but it makes me want to fix stuff. I started working on audio gear back in the 1970’s . Keep up the great job.

You are so right. I bought matching Sound generator and signal generator units for $5. Little clean up and service and they are as good as new and very useful!

My God this is pure gold Paul... 🙄🤗 The coil winding sizes would have NEVER registered with me even though I KNEW more wire equals more inductance, hence lower freq. 😂 The mystery item ? I thought it was a tuning coil from an old auto radio... 😖 Feed-thru's are a "bit" smaller these days 😂😂😂 Thanks man... this was rivetting from start to end.. 🤗 BTW... I'm just a hobbyist but I'da thought the fixed end of the variable cap would be grounded... your logical explanation was an eye-opener !! 😎👍☘️🍺

Absolutely brilliant to watch Paul. Detail and explanations are so clear and precise that the average learner can pick your tips up so easy. Best regards from a British viewer and subscriber.

Fantastic re-build, Sir! Can't wait to see it in use.

Paul I love to see vintage equipment brought back, I would go as far as to say your Vedolyzer, is better now than, when it left the factory, superb restoration 73 Paul

Mr. C, you're the best. Excellent video, well organized, and truly educational. I wish we could upload your knowledge and skills to the Matrix so the rest of us could download it. I look forward to your next project.

That thing is so cool, looks brand new and you made everything working spot on. You explain everything in a logical way- a great channel for us trying to learn. Thank you

Great video Paul, an info-packed masterclass as usual. Can't wait to see the Vedolyzer in use on the bench for equipment testing/alignment. Many of the cautionary tales you mentioned in the video I have also experienced first hand, especially not aligning receivers at the band edges or mounting trimmer caps the wrong way round. Nice Job!!

Paul I think this is one of the best tips videos you've done yet. Great stuff on alignment, I've learned so much, thanks! And 73!

Always a great tutitorial....I love your videos....

Yet another fine video, and the now the SUPREME VEDOLYZER works perfectly again :D Incredible workmanship and tips, thanks so much...!

Thank you for taking the time to do these videos. I learn so much from you, and I have been repairing radios and stereos since the early 1980s.

Excellent video and tutorial, very useful tips. I've never owned anything that old but when I was growing up one of my grandmother's older brothers was a Ham in the early days. He had all sorts of stuff. I used to look up to him as some sort of wizard, very mystical. He's the one that got me started by helping me with my first crystal radio build back in the 50s. BTW, he was a shipwright engineer that designed and built ships for a company out of Liverpool. Thank you for your time, its greatly appreciated.

What a lovely machine. I love the design of the bezel around the oscilloscope and the front panel and all the knobs. It is fascinatingly technical and would be a lot of fun to use I'm sure. The accuracy of the beautiful analogue meter is proof of the quality and I have a feeling (from my unskilled viewpoint) that it actually teaches you things by simply using it. The alignment procedure was very educational too. Another very interesting video. Cheers.

Good morning Mr Carslon's : another great video !!! thanks for the share i'm totaly ahstoning about your kwonlelge and please d' ont stop your videos ...For me in France you are may be the best for my capacity for understand' ...and the tricks of repair and electronic knowlege, ... Merci and long life for you Mister and your family ....god bless you !!! Eric From France in Normandy. ( sorry about my English )

As usual, a very interesting, informative and detailed video from Mr. Carlson. Thank you.

Another jewel of video! pearls of wisdom those tips! the Lab 2 looks cool too. Thanks for taking the time to produce them, we understand is a lot of hours to condense in 58 minutes.

Awesome, glad to see that beast is working. That Wego brown tube thing looks like a High Voltage oil filled Capacitor.

Great as usual Paul.

Excellent video!

Hi Paul, I just found your videos yesterday and have only watched two so far. Working on a transceiver and Sony receiver. It has been over 50 years since I was in the Navy and working on some missile fire control systems that were designed in the 1950s using vacuum tube technologies. Wow, I had forgotten how interesting trouble shooting and repairs could be. I will enjoy viewing your work.

man i cant believe how accurate that thing is!! man it brings ya tear to ya eye

One of your best videos Thanks

Love this series! The videolyzer is an incredible pice, especially for its time!! I don't have time to watch it all now, but I plan to catch up soon!

Amazing piece of equipment. 👍

Quite a unique term. Vedolyzer sounds like something out of a sci-fi film.

Excellent tips Mr. C .

Simply amazing!!!

Very nice piece of equipment and as usual a flawless presentation indeed. Thank you. And as for the trivia question it looks to be a High Voltage Capacitor (in the order of thousands of volts) considering the large size. Similar looking capacitors were used as stud connections in the CRT high voltage area in Russian (Black & White) TV's.

Amazing Lab. I like this.

I really like your lessons,really. Min 3.59: Yes, yes yes and again yes. My uncle always told me: if you know what a thing is like, you know what this thing does, how it works, and you know how to make it work as well as knowing how to repair it correctly. And this is absolutely true.

EPIC... loved it.

ur the best sir carlson lab

HV capacitor. Great video / education like always. Thank you.

3:56 "the magic is not in the peace of test equipment, that you have, the magic is in you" :-)

All worship the Supreme Vedolyzer!

I have been watching this series in reverse... So someday I will get to see you break it down.

You must be a genius, dude !!!!! 73

Thank you Mr. C.

Nice review on this old device your tips on finding the calibration pots caps and inductors is well taken use your head first, Then proceed.

Looks like a gizmo I should have, a sort of all-in-one test machine, man what I could do with one of those in my back room!

Nice video great work

My Hero

Thumbs up!

Didn’t I see that thing behind the curtain in the Wizard of Oz? Great device, great video.

Did you change your camera ? I say because this video just made my screen alive ! I remember that in the now defunct WRIO AM radio station they had one of those Vedolyzer in their storage room. An old Continental AM transmitter captured my attention there and I asked the senior engineer if I could restore it and he agreed and in fact joined me in the project .Now I would have love doing the Vedolyzer after watching your videos . Good Job !

Supreme restoration!

Another Supereme video :)

Watch,learn and enjoy, brilliant content. Nice to see Lab 2, mystery object definitely high voltage/currant (out of a transmitter maybe?) some kind of high voltage isolation coupling device. Well thats my guess.:):)

Inline filter capacitor! I finally guessed one correctly!

At 17:00 you can see Mr. Carlson’s video monitor reflected in the chrome. Cool.

Ahhh heck yeah!

That mystery device was interesting for me, since I found one pretty much like that while walking in the Mohave Desert of Arizona, near the Colorado River and Topock Marsh area. I had wondered for some time now what that was.

Hi Paul, Thanks for the tips and tricks and the excellent explanations. Another very informative video. 73 WB3BJU

Excellent, what it took me many months in practice, years ago, you covered better in an hour. Great instruction, the practice is barely useable anymore by MOST techs, only with the older stuff. Most of the new equipment out there is so packaged that it isn't able to be easily serviced. To those of us using older gear or higher end newer gear, HURRAH! This is keeping the faith of full servicability. Another truly superb video. Michael in Colorado.

I didn't know Mr Rogers was an electronics wizard!!! Lmaoooooo. Great stuff!

Nice video again, thank you! 😃 Answer to the trivia question: I think it's a Wego discharge capacitor, rated for many kV DC. Often used as Tesla coil primary capacitors. But I can be wrong.. 😉

Love your lab have used a lot of the test gear in your lab.(maybe that dates me):-)Inhave a great tube tester that is hard you find if you know anybody that needs one

Nice Video Mr. C... That device looks like a Tank Capacitor.

Amazing piece of kit. Even more amazing to think that it's 80 years old and probably more accurate than some of cheap junk going around these days ... would probably last longer too

Today's electronics is so much easier than back then. The mystery item? I don't have a clue, i guess it is an old flux capacitor for your time machine. :-)

i remember for alignment much like this one we use piece of clear tape on back of the calibration wheel to chassis now when we proceed to set the tracking while tightening up those lil screws and i mean they need to be turned slowly etc" lil tightening on one screw then the other if there is any ripple in that piece of tape we know we need to go lil - or + on the wheel just a hair or to so tape remains without any ripples ..worked so well 2 ..

I think I've watched every video, although I am a electrical technician in a very different field (I struggle). I just wondered if you will ever do a very simple teardown/repair with in-depth technical information of the components and how they work. Either way I will continue to watch.

I just watched this full series just for The learning experience.. not that I would ever get my hands on one of these but it's nice to know should I ever see one.. and I have no idea what that large piece is but if I had to say something I would say it was a high voltage choke but I'm probably wrong..

A most excellent 4 video series. My only disappointment was that you didn't go deeper into the oscilloscope section of that device. I would have liked to see some coverage of that section regarding the sweep generation, triggering, and especially a Mr. Carlson improvement to linearize the sweep using a constant current source or a very small portion of a much larger voltage to stay in the more linear area of the charge cycle....

I can't be the only one watching Mr C's vids and thinking "Happy little circuits..." Best guess a HV Cap The blue dot is probably marking the foil end.

A good tip for preventing dial/knob slippage when tightening the 'pinch screw', is to firstly make sure the end of the screw is truly at 90 degrees to its tread; this can be achieved with a file, and is not difficult with a little practice (obviously, use a lathe if you have one equipped with collets), and then file and/or polish a very slight radius on the screw end, so that the centre of its end is about 0.003" to 0.005" higher than at the periphery. This way, the screw end touches the pot or tuning shaft at the centre of the shaft and screw, and will thus prevent any geared-slippage. And as we all know, the centre of a rotating shaft does not turn, resulting in no movement' between the shaft and the knob, hub. The spindle will not be damaged with a dimple, since the amount of convexity is negligible and the tightening torque is minimal.

I very like the way u teaching

This is the third time I've seen this video... and I did remember something I hadn't thought about before for a few decades. Gol-ly! LOL de KQ2E

14:00 I align it this way even if the aligment procedure says otherwise. I converted couple radios from OIRT (65.5-74MHz) to CCIR (87.5-108MHz) band.Many would specify to tune the input stage at just one frequency. However if you do adjustments at band ends you end up with results better than from the factory.

Great video as always, always a joy to watch. About the trivia question, is it a RF feed-through capacitor?