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Old 10-25-2014, 10:14 PM
Jon F's Avatar
Jon F Jon F is offline
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Awesome Pickup: RCA TMV-122b Oscillograph

Recently bought an RCA TMV-122b, maybe the closest I'll get to a prewar TV set. It is in great shape with original RCA 906 CRT with clear envelope. Really nice looking chassis. Seller claimed it powered up and what would you know, still works and looks original from what I can tell. Impressive.

Probably will leave in this condition as a show piece.
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Old 10-26-2014, 09:56 AM
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N2IXK N2IXK is offline
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Location: Sittin' on the "Group W" bench...
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Very cool! That was the very first scope I ever owned as a kid. It was given to me by an old guy in the neighborhood who ran a radio/TV shop for many years. I remember how heavy that beast was, particularly the thick steel case.

Used it for a few years until the power transformer HV winding shorted out.

The CRT in mine was a DuMont replacement 3AP1, but I now have a clear envelope 906 in my tube collection. A wonderful tube for explaining how a CRT works, because you can see every part of the thing!
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Old 10-26-2014, 12:38 PM
JBL GUY JBL GUY is offline
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Very nice!

Thanks for the pictures.
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Old 10-27-2014, 01:39 AM
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Tubejunke Tubejunke is offline
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Location: Martinsville, VA
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Very nice indeed! Great find. I love working original equipment.
"Face piles of trials with smiles, for it riles them to believe that you perceive the web they weave, and keep on thinking free"
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Old 10-27-2014, 08:25 PM
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ChrisW6ATV ChrisW6ATV is offline
Another CT-100 lives!
Join Date: Feb 2007
Location: Hayward, Cal. USA
Posts: 3,324
Nice. I have a pre-war Clough-Brengle "oscillograph" that I bought at a ham radio flea market around 1980. At that time, it still worked as-is, but I will not power it up again until I restore it at some point.

Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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Old 12-22-2014, 10:37 PM
VTVM VTVM is offline
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Coolest thing I've seen in a long time!
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Old 03-10-2019, 05:45 PM
Tim Tress Tim Tress is offline
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Location: Beaver Falls, Pennsylvania
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I just stumbled across this old thread.... That was my first oscilloscope, almost 50 years ago; I found it at a junk store. The power transformer was missing, so I rewound a TV transformer to get the three 2.5 volt filament windings required, and used a Sylvania Halolight transformer for the high voltage. The damn thing worked! It's still out in the shed.
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Old 03-11-2019, 04:53 AM
Dude111 Dude111 is offline
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Im glad it works good for ya!!!

JON I hope your still enjoying yours
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