On Thursday, November 1, 2018 at 10:50:19 PM UTC, Thomas Kummer wrote: > > Thank you, for the input. I think I’m gonna go with the OG-4. Are the > metal or Bakelite base ones better, for the OG-4. The metal ones of OG > series seem to have an earlier date on them, if that is the date I’m > looking at. That could be a problem if I wanted a purple / blue Dekatron, > but with the OG-4, the date shouldn’t matter that much I would think.
Just to be clear, my statement that it is a storage effect shouldn't be taken to imply that later date code high-speed tubes are more likely to be OK than earlier dated ones. That might be the case, but the data I have don't provide a big enough sample to test that idea. All of these tubes have been in storage for >25 years as an absolute minimum (most of them 40+ or 50+), and so there's been plenty of time for stuff to happen to all of them. There's lots of death observed among late dated tubes as well as early dated ones. Don't worry about OG-4 - I suspect they'd outlive us all! > Does the darkening of the top of the tube matter with the OG-4, or is the > neon bright enough? I've seen examples where it does make a significant difference even on OG-4 or A101. But obviously you're starting from a higher light output from the neon-based tubes, so it's less of a factor than for the purple dekatrons - you've more tolerance in the system. I'm sure it'll be just fine if you start off with an OG-4, and if you want to upgrade later to a 6802 or GC10B, it'll just be a matter of getting the tube and reworking the jumper wires to account for the different pinout. Enjoy... Jon. -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/cb7c55ab-c347-466d-8595-87f0365c3055%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
