They had a short lifetime so they got replaced earlier in the lifetime of the product. In some cases the dead tubes were put into the boxes of their replacement tubes instead of being thrown out like they should have been. At least that's the conclusion I came to when buying thrm on eBay 20 years ago.
On Thu, Sep 22, 2022, 10:43 AM chuckrr <[email protected]> wrote: > Does anybody here know why so many of the Burroughs B-6844 tubes found > "untested" on Ebay are dead? > > Conversely, I have found that a much better bet for untested 6844A tubes > are the National NL-6844A ones. > > Those seem tio always have a much better chance of still being good. > > Anyone know why? > > > > Chuck > > > > > > > -- > 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/202209221043691.SM102995%40ADT-IM1 > <https://groups.google.com/d/msgid/neonixie-l/202209221043691.SM102995%40ADT-IM1?utm_medium=email&utm_source=footer> > . > -- 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/CAPbqtvcteugAhCUKmBqd6SgHrjEQxp4XMJwrefNtrbpxYZ-uVg%40mail.gmail.com.
