Great Thanks for all the information! You are all quite right and this was something quite new to me.
When I look carefully with a magnifying glass there are definitely lines in the coating where the mica wafer has scratched it when the tubes internal parts was inserted in the glass envelope. The bottom edge of the coating is very sharp and not aligned with the mica. There are no longer any doubt what so ever about the coating has been added as an improvement at the factory. Knowing the facts those coated ones are the tubes to prefer. I have now also tested in the receiver with a signal generator and they are at least as good as my other 6AH6 without coating. -- 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/1e405494-8cb3-48b5-84b5-f203e4e21ae4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
