NRI 68 tube tester for newer tubes - Printable Version

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NRI 68 tube tester for newer tubes - Tennangler - 12-26-2024

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

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RE: NRI 68 tube tester for newer tubes - RodB - 12-26-2024

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

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RE: NRI 68 tube tester for newer tubes - Tennangler - 12-27-2024

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

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