Based on my experience, you should expect at least another 300k hours even if you "overdrive" them. That said, I don't remember anyone reporting a natural death from old age and excessive usage.
On Wednesday, May 27, 2020 at 1:44:43 AM UTC-7, Terry Kennedy wrote: > > > B7971s are amazingly robust. The MOD-SIX in the room where I'm typing this > reports 76,571 tube-on hours > -- 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 on the web, visit https://groups.google.com/d/msgid/neonixie-l/ec15755c-3df9-4d1a-a5b6-0565b7c46149%40googlegroups.com.
