Four unidentified tubes

[Adam Piórko]

Hi,

At the beginning, I apologize for any potential language errors.

Recently, I purchased a Nixie tubes, including some without any labels that I've never seen online before.

To avoid influencing the responses to my questions by showing all the pictures right away, I created a form with images and questions.

Link to the form: https://forms.gle/frmLGNC21vvtwB7a7

For those interested in what others think, here's a spreadsheet with the responses:

https://docs.google.com/spreadsheets/d/1nLfibsxU6VJlkkvQ5WDbqf5lvFvVf9YXliW_yJ_-SUo/edit?usp=sharing

For those who want to see higher-resolution images: https://drive.google.com/drive/folders/1cweRUT3Vihw6jMqjabuwxRFCLpToSJAp?usp=sharing

They don't know how to use the dekatron, so I won't check its operation. 

As for the nixie tube, what value of limiting resistors do you suggest for 170V?

[liam bartosiewicz]

Great finds! I’ve definitely not seen any quite like those before.

On Oct 28, 2023, at 12:01 PM, Adam Piórko <adam.p...@gmail.com> wrote:



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[Audrey]

Those are extremely unusual. Where did you find them?

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[Adam Piórko]

Auction on German ebay

[Richard Scales]

Great finds indeed - love the multi segment tubes!

- Richard

[Adam Piórko]

Hi,

I have prepared short videos for those interested in how these tubes work.
I tested at 170V and a 22K resistor.

Matrix tube:

https://youtube.com/shorts/t5ID4yaS7O0

Segments tube:

https://youtu.be/qwhtoexY2Rg

Adam

[Paul Andrews]

Nice. Love the matrix tube!

[Michail Wilson]

https://www.ebay.com/itm/315143518581

 

Not my auction.   0 feedback user, but has 10 available.

 

Michail

[Nicholas Stock]

That's a pretty reasonable price these days...

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[H. Carl Ott]

Backstory:

https://www.reddit.com/r/nixie/comments/1ako4k3/i_recently_inherited_two_boxes_of_burroughs_b7971/

carl (no affiliation) 
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Henry Carl Ott   N2RVQ    hcar...@gmail.com

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[Nicholas Stock]

Thanks Carl.

My wife's nightmare is that I croak early and she's left with figuring out what to do with my hoard...

Thanks for the plug Paul.... :)

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[H. Carl Ott]

I just have a minor addiction to reddit and saw the thread earlier today.

  And looks like someone just scooped them all up.

 Backstory probably helped with the zero feedback.

  Good luck to whoever got them.

 

carl

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[Robert]

Do you think they were N.O.S.?

Rob

On 7 Feb 2024, at 17:43, H. Carl Ott <hcar...@gmail.com> wrote:



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[Michail Wilson]

Absolutely not.

New were shipped in Styrofoam containers holding about 25 of them.  There were stored in old boxes of six according to the pictures.

These were in paper bags with handwriting on them.  Also, new was never sold with sockets which you can tell also had their ends soldered.

 

The date appears to be Jan 2^nd, 2000     So, although they may have been in storage since 2000, they were not new.

 

Michail Wilson

206-920-6312

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[Robert G. Schaffrath]

I would be in the same situation myself. As I have noted before, back in 1979 when I was still in High School, I had built a six-digit clock based on an MM5311 clock chip (still works though many components upgraded by me over the years). The tubes and sockets came from three of the stock ticker boards that were still plentiful back then. I decided at the time that I wanted six spare tubes so that someday I could replace any tubes that stopped working (they still work). The company I bought the boards from, Meshna Electronics in Lynn, Massachusetts, also sold tubes individually. At that time, he was selling used pulls for $4/each and what were claimed to be NOS tubes for $5/each. I opted to purchase six of the NOS which came to $30 plus shipping. They came individually wrapped in bubble wrap in a small plain carton along with an original Burroughs datasheet on the tubes. I still have them in that little carton and the original datasheet (plus I had put in a seventh Burroughs branded, not Ultronics, B-7971 that I have long since forgotten where I got it from but I assume is used). Of course, if I were to sell them (not planning on it), I have no real way to prove the six are NOS. It is possible I paid $6 for used tubes but I have to assume the seller was honest in that regard. It is possible the original purchaser of these tubes was in the same boat. Acquired them from a seller claiming they were NOS back in the 70's.

Regardless, I doubt there would be much price difference these days between used and NOS. The prices are already quite high and the tubes last a long time.