7591 tube, can't find that number on tester. - diyAudio
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Old 18th October 2012, 10:12 PM   #1
Input2 is offline Input2  Canada
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Default 7591 tube, can't find that number on tester.

I have a few 7591 tubes that I would like to test on my 1957 Dyna-Quik 650 tube tester, I don't have the additional update 610 panel that will test more of the tubes made later.
Would there be a older tube number that is close to the 7591?
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Old 19th October 2012, 12:54 AM   #2
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Does your tester have settings for the 7868? Very similar, but you'll need to correct to the octal pinout.

All good fortune,
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