I'm wondering what type of dud dekatrons others have run into. Primarily interested in Russian types.
In general its been found that the high speed (non-neon) dekatrons have a very high dud rate. Personally, none of my Ericsson GC10D, nor GS10D tubes work. No Gas; gone to air, just by sitting on the shelf. A little more than half of the 6909 and 6910 tubes are duds. In the past, all of the Russian OG-3 tubes I've had were good. Until yesterday. I bought 4 OG-3 tubes, and tested them when I received them, about a month ago. I got them to verify that they would actually work in my spinner kit, which they did. But yesterday I powered up a spinner, with an OG-3, that had been sitting there, off, for most of the month. It didn't light up. The board was otherwise, working properly. I swapped in another OG-3, and it works fine. I then placed the questionable tube near a spark generator. Instead of glowing, it had the tell tale sign of air. It could be that the tube had some kind of isolated defect, which finally let air in. OR, it could be that Russian "high speeds" (of which an OG-3 is) are subject to all the ills of other high speeds. It could be both. This particular tube has a mechanical defect, but it would "dud-out" in time anyways. I just want to know what other people have experienced with these tubes. OG-3, OG-7, and OG-8 in particular. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/UN5yuQHlPW8J. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
