Try this... https://en.wikipedia.org/wiki/Krypton-85
You might be surprised at the number of tubes that over the years have had 'radioactive' contents. Many gas discharge devices had it added to regularise the characteristics for light/dark operation (trigger tubes and regulators) or their trigger parameters (eg TR cells). Some of the WWII era radar devices [and later ones with warnings displayed] have truly dangerous types and quantities of 'radiation'. There are web lists of tube types. John K ----- Original Message ----- From: ZY To: neonixie-l Sent: Friday, August 05, 2016 5:19 PM Subject: [neonixie-l] Re: Burroughs Panaplex II clock display... What does the Kr85 stand for? I see it on one of my displays too. -- 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 email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/bc38b984-3344-4df9-bc08-27e1fbbe1a8a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- 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/60CCC7AC38EF4636B0C735324DACF872%40compunet4f9da9. For more options, visit https://groups.google.com/d/optout.
