Found An Old Nixie Counter with Odd NE2 Type Tube

[Tom Katt]

Going through my Nixie stash of junk I have collected over the years and re-found this old board with 3 ZM1000 tubes and a large NE2 type bulb used for a '1' digit.  I think it's some kind of counter - it has 7490 decade counters feeding 7441 driver chips.  There are also 3 NE2 bulbs, I assume for +/- etc.   I haven't traced the board out, but it looks pretty straightforward.  Chips are dated 1972.

Does anyone know what the 'big NE2' bulb is?   Photos attached.

Thanks!

[Tom Katt]

Just curious if anyone knows what that "1" tube is...  Might prove handy for a 12 hour clock when I have 3 tubes left...

Thanks!

[Nicholas Stock]

It's an extra long NE2 by the looks of it..... they come in a host of different lengths, I think that one may be an A1A or similar... see the attached...

On Fri, Aug 7, 2026 at 10:33 AM Tom Katt <tomk...@gmail.com> wrote:

Just curious if anyone knows what that "1" tube is...  Might prove handy for a 12 hour clock when I have 3 tubes left...

Thanks!

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[Leroy Jones]

Tayda Electronics has a small variety of NE2 style neon lamps.   They have some nice long ones.       -Chuck

[Nicholas Stock]

Tayda is great!

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