One of my 6091's had darkened in the front, presumably from sputtering. After running for several hours in a different position, and at 3X rated current, the substance that was deposited on the inside front of the glass has dispersed.
I dont know if it's cathode material, or mercury condensate This particular tube was displaying the same numeral for almost 4 years (no depoisoning routine). Other numerals showed slight degradation but appear to be clearing-up. -- 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/e79f0156-a1c6-47d5-95d6-7bfce6b553a5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
