Wow! That's one I haven't seen before (and I've seen quite a few...). Looking at the construction, I think it probably is a prototype - it doesn't look like the kind of structure that is robust and well-controlled enough with respect to tolerances etc to be a commercial tube.
If you're interested to sell one, please PM me! Jon. On Saturday, November 22, 2025 at 7:03:15 PM UTC Dekatron42 wrote: > Nice to see a new design! > > Many many years ago i scoured patents and books for Dekatrons and other > counting tubes and I have a very faint memory of a similar design in a > Russian patent application. Maybe our Dekatron Guru Jon does have > information on this one? > > Any chance you can set it up to run and record a video to show us all? > > /Martin > > On Saturday, 22 November 2025 at 19:29:27 UTC+1 Greg S wrote: > >> Hi! >> Do anyone know this type of dekatron? It has a very odd inside structure. >> With help of a CCFL driver I managed to know the pinout, and figured it >> out: It is a 40 electrode dekatron filled with possibly neon. Pins are G1, >> G2, G3, Anode, K0, and common cathodes (K1-K9). Finding place is Hungary, I >> only know an other collector to have this, also here. However we don't have >> any information about dekatrons were produced here ever. Also seems to be a >> prototype but not sure. There are no markings at all. Any help would be >> nice :)[image: 20250713_175806_resize.jpg][image: >> 20250713_175937_resize.jpg][image: 20250713_180003_resize.jpg][image: >> 20250713_180030_resize.jpg][image: 20250713_180204_resize.jpg][image: >> 20250713_180448_resize.jpg] > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/0a2d1708-479c-47a4-ab61-090db47369den%40googlegroups.com.
