I don't know much about that tube, but the similar 5870 series uses the letter suffix to describe the pins and spacer plastic.
On Wed, Jan 26, 2022, 6:19 AM 'Bogdan Paduraru' via neonixie-l < [email protected]> wrote: > Dear friends , > > Does any one of you knows the difference between these 2 tubes ? > NL1222S and NL1222B > > -- > 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/bcfdd003-3423-487f-9fda-e95d5b04fb52n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/bcfdd003-3423-487f-9fda-e95d5b04fb52n%40googlegroups.com?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/CAPbqtvfXoD-n4aK_CWVSou2_BEDAeA0Ftim1h8%2B5N3kgCWtafg%40mail.gmail.com.
