[Tennangler]

I have access to a NRI model 68 tube tester. I have tested almost all the tubes in my non functioning tube gear. The instructions do not list settings for some newer tubes.
Does someone know if there is a document that list newer tubes. The tubes in question are EL84 and EZ81. Does this model even have the ability to test them?
Thanks
James

[RodB]

6BQ5 is the North American equivalent of el84 and 6CA4 for the ez81. See if those are on the list.

[Tennangler]

Those two are not on the list either. I believe these tubes were introduced after the tester was made.