If Jon hasn't seen it it is indeed a rare one! This would be something for Dalibor to start to develop, it seems like a very simple design just using Mica sheets compared to the moulded ceramics used in most production dekatrons.
/Martin On Saturday, 22 November 2025 at 21:05:15 UTC+1 Jon wrote: > 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/09179c76-ec6f-4442-93d3-202c54f8fb61n%40googlegroups.com.
