Fractured when you picked them up? Odd. Have they been exposed to long periods of temperature swings in storage? That might make them susceptible. Nothing special with regard testing them. Easy check for gas is to hold them next to a plasma globe....be careful if you need to bend the pins, be gentle as you can fracture the glass if you're a bit ham fisted (ask me how I know....). I presume you have a good device to test them with....
Best of luck! They're lovely tubes... Nick Sent from my iPhone > On Sep 7, 2017, at 09:22, Clarke Payne <[email protected]> wrote: > > I have run across some 7971s I have had stored for 30 yrs. 3 of the 12 glass > envelopes fractured when I picked them up. One just disengrated.others seemed > good cleaned up ok havent tested yet but appear to be in sound shape. Anyone > run into this problem. Any special precautions before I test them? > > -- > 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/1d2134a5-ad2d-4b6a-a6d1-90ccf30da6f9%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/2086ED97-B7C7-4069-B9E7-4AC284C45493%40gmail.com. For more options, visit https://groups.google.com/d/optout.
