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NRI 68 tube tester for newer tubes
Tennangler
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City: Franklin State, Province, Country: Tennessee
#1

12-26-2024, 12:57 PM
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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RodB
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City: Roseville, MN
#2

12-26-2024, 03:35 PM
6BQ5 is the North American equivalent of el84 and 6CA4 for the ez81. See if those are on the list.
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Tennangler
Junior Member
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Posts: 23
Threads: 2
Joined: Mar 2021
City: Franklin State, Province, Country: Tennessee
#3

12-27-2024, 08:38 PM
Those two are not on the list either. I believe these tubes were introduced after the tester was made.
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  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment